{"items":[{"id":"NVI-00003986","kind":"vulnerability","title":"Denial of service from unlimited password lengths","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-3v6j-v3qc-cxff","CVE-2023-38492"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms, getkirby/cms, 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 3.5.8.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.6.6.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.7.5.2 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.8.4.1 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.9.6 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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-618152424de032df60422693e28446d6"],"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":"2026-06-17T06:10:19.930Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-7878cdae4c3ee503eb9c9b9431d66a64"},{"kind":"CVSS","as_of":"2026-06-17T06:10:19.930Z","value":"7.5 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-7878cdae4c3ee503eb9c9b9431d66a64"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"1.178%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.67653. Missing scores are unknown.","source_id":"sr-618152424de032df60422693e28446d6"}],"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-530e1656a64054259d1c6e979c60ae94","url":"https://github.com/advisories/GHSA-3v6j-v3qc-cxff","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3v6j-v3qc-cxff","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.660Z"},{"id":"sr-7878cdae4c3ee503eb9c9b9431d66a64","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-38492","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2023-38492","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T00:58:44.011Z"},{"id":"sr-618152424de032df60422693e28446d6","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-2023-38492","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.5.8.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.6.0; fixed 3.6.6.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.7.0; fixed 3.7.5.2"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.8.0; fixed 3.8.4.1"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.9.0; fixed 3.9.6"]}],"null_published_at":"2026-11-03T17:49:18.516Z","source_updated_at":"2026-09-10T03:50:08.461Z","source_disclosed_at":"2023-07-28T15:34:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.660Z"},{"id":"NVI-00003986","kind":"vulnerability","title":"Denial of service from unlimited password lengths","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3v6j-v3qc-cxff","CVE-2023-38492"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms, getkirby/cms, 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 3.5.8.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.6.6.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.7.5.2 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.8.4.1 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.9.6 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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-618152424de032df60422693e28446d6"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"1.178%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.67653. Missing scores are unknown.","source_id":"sr-618152424de032df60422693e28446d6"}],"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-530e1656a64054259d1c6e979c60ae94","url":"https://github.com/advisories/GHSA-3v6j-v3qc-cxff","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3v6j-v3qc-cxff","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.660Z"},{"id":"sr-618152424de032df60422693e28446d6","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-2023-38492","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.5.8.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.6.0; fixed 3.6.6.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.7.0; fixed 3.7.5.2"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.8.0; fixed 3.8.4.1"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.9.0; fixed 3.9.6"]}],"null_published_at":"2026-11-01T01:45:38.539Z","source_updated_at":"2026-09-10T03:50:08.461Z","source_disclosed_at":"2023-07-28T15:34:13.000Z","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":"2026-10-31T21:41:49.660Z"},{"id":"NVI-00003986","kind":"vulnerability","title":"Denial of service from unlimited password lengths","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3v6j-v3qc-cxff","CVE-2023-38492"],"plain_summary":"OSV carries this publisher advisory for getkirby/cms, getkirby/cms, getkirby/cms, 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 3.5.8.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.6.6.3 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.7.5.2 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.8.4.1 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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 3.9.6 for getkirby/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"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-530e1656a64054259d1c6e979c60ae94","url":"https://github.com/advisories/GHSA-3v6j-v3qc-cxff","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3v6j-v3qc-cxff","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.660Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 3.5.8.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.6.0; fixed 3.6.6.3"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.7.0; fixed 3.7.5.2"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.8.0; fixed 3.8.4.1"]},{"certainty":"source_listed","source_ids":["sr-530e1656a64054259d1c6e979c60ae94"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.\n\n----\n\n### Introduction\n\nDenial of service (DoS) is a type of attack in which an attacker floods a service with the intention to limit performance or availability for legitimate users of the service.\n\nIn the variation described in this advisory (a so called application layer denial of service attack), it is performed by causing a computationally expensive task to be run on the server. This may then cause a performance bottleneck.\n\n### Impact\n\nKirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website t","public_affected_ranges":["ECOSYSTEM: introduced 3.9.0; fixed 3.9.6"]}],"null_published_at":"2026-10-31T22:12:52.609Z","source_updated_at":"2026-09-10T03:50:08.461Z","source_disclosed_at":"2023-07-28T15:34:13.000Z","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":"2026-10-31T21:41:49.660Z"}],"next_cursor":null,"snapshot_revision":"42594"}