{"items":[{"id":"NVI-00006123","kind":"vulnerability","title":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","revision":5,"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-wr9h-4r83-f4v6","CVE-2026-54002"],"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-246ab797640c844f4538c0fc5f24d815"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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":"8.5 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-435110b36ec84d32b193f82b4412fdd4"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.547%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.45865. Missing scores are unknown.","source_id":"sr-246ab797640c844f4538c0fc5f24d815"}],"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-3991804e03b668728213e1b3a6935f00","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:10.578Z"},{"id":"sr-a88b123ed5ea3d6d84070bf926b441ae","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.390Z"},{"id":"sr-435110b36ec84d32b193f82b4412fdd4","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54002","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54002","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-246ab797640c844f4538c0fc5f24d815","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-2026-54002","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.787Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3991804e03b668728213e1b3a6935f00"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["<= 4.9.3"]},{"certainty":"source_listed","source_ids":["sr-3991804e03b668728213e1b3a6935f00"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":[">= 5.0.0-alpha.1, <= 5.4.3"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-08T19:53:33.536Z","source_updated_at":"2026-06-18T15:04:53.000Z","source_disclosed_at":"2026-06-18T15:04:52.000Z","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":"2026-10-31T21:42:41.390Z"},{"id":"NVI-00006123","kind":"vulnerability","title":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","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-wr9h-4r83-f4v6","CVE-2026-54002"],"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-604176008e141c01b045e9130902ac7c"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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":"8.5 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-435110b36ec84d32b193f82b4412fdd4"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.547%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.4583. Missing scores are unknown.","source_id":"sr-604176008e141c01b045e9130902ac7c"}],"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-3991804e03b668728213e1b3a6935f00","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T07:20:10.578Z"},{"id":"sr-a88b123ed5ea3d6d84070bf926b441ae","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.390Z"},{"id":"sr-435110b36ec84d32b193f82b4412fdd4","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54002","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54002","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-604176008e141c01b045e9130902ac7c","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-2026-54002","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3991804e03b668728213e1b3a6935f00"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["<= 4.9.3"]},{"certainty":"source_listed","source_ids":["sr-3991804e03b668728213e1b3a6935f00"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":[">= 5.0.0-alpha.1, <= 5.4.3"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-07T07:07:39.851Z","source_updated_at":"2026-06-18T15:04:53.000Z","source_disclosed_at":"2026-06-18T15:04:52.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.390Z"},{"id":"NVI-00006123","kind":"vulnerability","title":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","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-wr9h-4r83-f4v6","CVE-2026-54002"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-604176008e141c01b045e9130902ac7c"],"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":"8.5 HIGH (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-435110b36ec84d32b193f82b4412fdd4"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.547%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.4583. Missing scores are unknown.","source_id":"sr-604176008e141c01b045e9130902ac7c"}],"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-a88b123ed5ea3d6d84070bf926b441ae","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.390Z"},{"id":"sr-435110b36ec84d32b193f82b4412fdd4","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54002","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54002","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-604176008e141c01b045e9130902ac7c","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-2026-54002","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-01T14:34:07.637Z","source_updated_at":"2026-09-10T03:50:50.907Z","source_disclosed_at":"2026-06-18T15:04:52.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.390Z"},{"id":"NVI-00006123","kind":"vulnerability","title":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wr9h-4r83-f4v6","CVE-2026-54002"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-604176008e141c01b045e9130902ac7c"],"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":"0.547%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.4583. Missing scores are unknown.","source_id":"sr-604176008e141c01b045e9130902ac7c"}],"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-a88b123ed5ea3d6d84070bf926b441ae","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.390Z"},{"id":"sr-604176008e141c01b045e9130902ac7c","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-2026-54002","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-11-01T01:45:38.533Z","source_updated_at":"2026-09-10T03:50:50.907Z","source_disclosed_at":"2026-06-18T15:04:52.000Z","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":"2026-10-31T21:42:41.390Z"},{"id":"NVI-00006123","kind":"vulnerability","title":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wr9h-4r83-f4v6","CVE-2026-54002"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae"],"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-a88b123ed5ea3d6d84070bf926b441ae","url":"https://github.com/advisories/GHSA-wr9h-4r83-f4v6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-wr9h-4r83-f4v6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.390Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.9.4"]},{"certainty":"source_listed","source_ids":["sr-a88b123ed5ea3d6d84070bf926b441ae"],"technology":"getkirby/cms","known_exclusions":[],"conditions_summary":"### TL;DR\n\nThis vulnerability affects Kirby sites and plugins that use the `writer` or `list` fields or that use `$dom->sanitize()`, `Sane::sanitize()`, `Sane\\Html::sanitize()`, `Sane\\Svg::sanitize()`, `Sane\\Xml::sanitize()`,  `Sane::sanitizeFile()` or `$file->sanitizeContents()` with untrusted input.\n\nIt was possible to inject malicious markup as children of an unknown HTML/XML tag, which would then be passed through `Dom::sanitize()` without being correctly sanitized according to the provided sanitization rules, causing a cross-site scripting (XSS) risk.\n\n**This vulnerability is of high severity for affected sites.**\n\nThe default file upload protection is *not* affected, so sites that only *validate* uploaded files are not exposed to this vulnerability. The vulnerability can only be exploited by authenticated users.\n\n----\n\n### Introduction\n\nCross-site scripting (XSS) is a type of vulnerability that allows executing any kind of JavaScript code inside the site frontend or Panel session of the same or other users. In the Panel, a harmful script can, for example, trigger requests to Kirby's API with the permissions of the victim.\n\nIn a *stored* XSS attack, the malicious payload is sa","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-alpha.1; fixed 5.4.4"]}],"null_published_at":"2026-10-31T22:13:05.859Z","source_updated_at":"2026-09-10T03:50:50.907Z","source_disclosed_at":"2026-06-18T15:04:52.000Z","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":"2026-10-31T21:42:41.390Z"}],"next_cursor":null,"snapshot_revision":"42594"}