{"items":[{"id":"NVI-00002084","kind":"vulnerability","title":"Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","revision":6,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-whxw-24jc-cwmv","CVE-2026-54003"],"plain_summary":"GitHub lists this reviewed advisory for getkirby/cms, getkirby/cms. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1548854d2020b3c857466cb64095104d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.9.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.4.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-25T17:10:00.197Z","value":"9.1 CRITICAL (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-65036b9f348c42432ba228bb16dad0af"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.743%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.54828. Missing scores are unknown.","source_id":"sr-1548854d2020b3c857466cb64095104d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-5b7f77ad183ef96118a7558ed16ee852","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:10.578Z"},{"id":"sr-0abaaf36bafe5a5271657307d14582ae","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.388Z"},{"id":"sr-65036b9f348c42432ba228bb16dad0af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54003","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54003","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-1548854d2020b3c857466cb64095104d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-54003","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.331Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5b7f77ad183ef96118a7558ed16ee852"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["<= 4.9.3"]},{"certainty":"source_listed","source_ids":["sr-5b7f77ad183ef96118a7558ed16ee852"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":[">= 5.0.0-alpha.1, <= 5.4.3"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-08T19:53:38.928Z","source_updated_at":"2026-06-18T15:04:58.000Z","source_disclosed_at":"2026-06-18T15:04:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:41.388Z"},{"id":"NVI-00002084","kind":"vulnerability","title":"Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-whxw-24jc-cwmv","CVE-2026-54003"],"plain_summary":"GitHub lists this reviewed advisory for getkirby/cms, getkirby/cms. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-8f18138e25265f5148238903c8c81822"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 4.9.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.4.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-25T17:10:00.197Z","value":"9.1 CRITICAL (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-65036b9f348c42432ba228bb16dad0af"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.743%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.54727. Missing scores are unknown.","source_id":"sr-8f18138e25265f5148238903c8c81822"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-5b7f77ad183ef96118a7558ed16ee852","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:10.578Z"},{"id":"sr-0abaaf36bafe5a5271657307d14582ae","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.388Z"},{"id":"sr-65036b9f348c42432ba228bb16dad0af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54003","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54003","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-8f18138e25265f5148238903c8c81822","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-54003","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5b7f77ad183ef96118a7558ed16ee852"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["<= 4.9.3"]},{"certainty":"source_listed","source_ids":["sr-5b7f77ad183ef96118a7558ed16ee852"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":[">= 5.0.0-alpha.1, <= 5.4.3"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-08T15:11:47.500Z","source_updated_at":"2026-06-18T15:04:58.000Z","source_disclosed_at":"2026-06-18T15:04:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.388Z"},{"id":"NVI-00002084","kind":"vulnerability","title":"Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-whxw-24jc-cwmv","CVE-2026-54003"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.9.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.4.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-8f18138e25265f5148238903c8c81822"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-25T17:10:00.197Z","value":"9.1 CRITICAL (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-65036b9f348c42432ba228bb16dad0af"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.743%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.54727. Missing scores are unknown.","source_id":"sr-8f18138e25265f5148238903c8c81822"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0abaaf36bafe5a5271657307d14582ae","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.388Z"},{"id":"sr-65036b9f348c42432ba228bb16dad0af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54003","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54003","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-8f18138e25265f5148238903c8c81822","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-54003","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-03T02:33:09.144Z","source_updated_at":"2026-09-10T03:50:50.891Z","source_disclosed_at":"2026-06-18T15:04:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:41.388Z"},{"id":"NVI-00002084","kind":"vulnerability","title":"Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-whxw-24jc-cwmv","CVE-2026-54003"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.9.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.4.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-65036b9f348c42432ba228bb16dad0af"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-25T17:10:00.197Z","value":"9.1 CRITICAL (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-65036b9f348c42432ba228bb16dad0af"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0abaaf36bafe5a5271657307d14582ae","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.388Z"},{"id":"sr-65036b9f348c42432ba228bb16dad0af","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54003","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54003","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-02T20:21:10.300Z","source_updated_at":"2026-09-10T03:50:50.891Z","source_disclosed_at":"2026-06-18T15:04:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.388Z"},{"id":"NVI-00002084","kind":"vulnerability","title":"Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-whxw-24jc-cwmv","CVE-2026-54003"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.9.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 5.4.4 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0abaaf36bafe5a5271657307d14582ae","url":"https://github.com/advisories/GHSA-whxw-24jc-cwmv","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-whxw-24jc-cwmv","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.388Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-0abaaf36bafe5a5271657307d14582ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the `Forwarded: for=...`, `X-Client-IP`, or `X-Real-IP` request header.\n\nIt was possible to install the Panel (= create the first admin user) in these setups even from remote IP addresses.\n\n**This vulnerability is of critical severity for affected sites.**\n\nYour site is *not* affected if any of the following apply: \n\n- An admin account has already been configured\n- The Panel and API are disabled\n- The site is not running behind a reverse proxy\n- The reverse proxy sets the `X-Forwarded-For` or `Client-IP` header instead of the affected ones.\n\n----\n\n### Introduction\n\nExternal Initialization is a type of vulnerability that allows attackers to initialize a system or configuration value without authentication.\n\nThis can give untrusted actors access to the system or let them control its behavior.\n\n### Affected components\n\nThe Kirby Panel and REST API are authenticated by local user accounts. If a Kirby installation does not yet have any users, it first needs to be installed. During the installation process, an initial admi","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-10-31T21:53:28.064Z","source_updated_at":"2026-09-10T03:50:50.891Z","source_disclosed_at":"2026-06-18T15:04:57.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:41.388Z"}],"next_cursor":null,"snapshot_revision":"42594"}