{"items":[{"id":"NVI-00010728","kind":"vulnerability","title":"DOMPurify: SMIL attributeName=href guard is skipped when PARSER_MEDIA_TYPE is application/xhtml+xml","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-c6gr-qvv4-5v3f","CVE-2026-116802"],"plain_summary":"GitHub lists this reviewed advisory for dompurify. 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-2fadb9c11208f3f9eaf79e91129ee3d2"],"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 3.4.17 for dompurify. Confirm the publisher’s latest guidance.","source_ids":["sr-0450ee8a591ba295750256083c2fca59"],"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":"2026-11-05T17:17:44.260Z","value":"6.1 MEDIUM (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-2fadb9c11208f3f9eaf79e91129ee3d2"},{"kind":"CVSS","as_of":"2026-11-05T17:17:44.260Z","value":"5.1 MEDIUM (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-2fadb9c11208f3f9eaf79e91129ee3d2"}],"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-d2e581a5ba471070830ea776db17d446","url":"https://github.com/advisories/GHSA-c6gr-qvv4-5v3f","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c6gr-qvv4-5v3f","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:30.906Z"},{"id":"sr-0450ee8a591ba295750256083c2fca59","url":"https://github.com/advisories/GHSA-c6gr-qvv4-5v3f","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c6gr-qvv4-5v3f","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-03T17:45:13.791Z"},{"id":"sr-2fadb9c11208f3f9eaf79e91129ee3d2","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116802","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-116802","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-07T00:53:11.204Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d2e581a5ba471070830ea776db17d446"],"technology":"dompurify","known_exclusions":[],"conditions_summary":"### Summary\n\nDOMPurify drops `attributeName` attributes whose value contains `href`, so an allowed `` or `` can't rewrite a link's href after sanitizing. The check compares the attribute name after `transformCaseFunc`, and that function doesn't lowercase in XHTML mode. In XHTML the attribute is spelled `attributeName`, so the comparison with `\"attributename\"` never matches and the guard does nothing.\n\nAn app that uses `PARSER_MEDIA_TYPE: 'application/xhtml+xml'` and allows `animate` and `attributeName` will keep ``. Clicking the parent link then runs the script.\n\nThis needs a non-default config, so going by SECURITY.md, this is a hardening bug rather than a bypass of the default config.\n\n### Details\n\nIn `_sanitizeAttributes` (dist/purify.js line 2216 in 3.4.16):\n\n```js\nconst lcName = transformCaseFunc(name);\n...\nif (lcName === \"attributename\" && stringMatch(value, \"href\")) {\n  _removeAttribute(name, currentNode, attr);\n  continue;\n}\n```\n\n`transformCaseFunc` is `stringToLowerCase` for text/html but the identity function for application/xhtml+xml, because XML names are case-sensitive. The XML parser keeps SVG'","public_affected_ranges":["<= 3.4.16"]},{"certainty":"source_listed","source_ids":["sr-0450ee8a591ba295750256083c2fca59"],"technology":"dompurify","known_exclusions":[],"conditions_summary":"### Summary\n\nDOMPurify drops `attributeName` attributes whose value contains `href`, so an allowed `` or `` can't rewrite a link's href after sanitizing. The check compares the attribute name after `transformCaseFunc`, and that function doesn't lowercase in XHTML mode. In XHTML the attribute is spelled `attributeName`, so the comparison with `\"attributename\"` never matches and the guard does nothing.\n\nAn app that uses `PARSER_MEDIA_TYPE: 'application/xhtml+xml'` and allows `animate` and `attributeName` will keep ``. Clicking the parent link then runs the script.\n\nThis needs a non-default config, so going by SECURITY.md, this is a hardening bug rather than a bypass of the default config.\n\n### Details\n\nIn `_sanitizeAttributes` (dist/purify.js line 2216 in 3.4.16):\n\n```js\nconst lcName = transformCaseFunc(name);\n...\nif (lcName === \"attributename\" && stringMatch(value, \"href\")) {\n  _removeAttribute(name, currentNode, attr);\n  continue;\n}\n```\n\n`transformCaseFunc` is `stringToLowerCase` for text/html but the identity function for application/xhtml+xml, because XML names are case-sensitive. The XML parser keeps SVG'","public_affected_ranges":["SEMVER: introduced 0; fixed 3.4.17"]}],"null_published_at":"2026-11-07T18:43:12.081Z","source_updated_at":"2026-10-22T16:24:24.000Z","source_disclosed_at":"2026-10-22T16:24:23.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T22:07:30.906Z"},{"id":"NVI-00010728","kind":"vulnerability","title":"DOMPurify: SMIL attributeName=href guard is skipped when PARSER_MEDIA_TYPE is application/xhtml+xml","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c6gr-qvv4-5v3f","CVE-2026-116802"],"plain_summary":"GitHub lists this reviewed advisory for dompurify. 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-d2e581a5ba471070830ea776db17d446"],"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 3.4.17 for dompurify. Confirm the publisher’s latest guidance.","source_ids":["sr-0450ee8a591ba295750256083c2fca59"],"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-d2e581a5ba471070830ea776db17d446","url":"https://github.com/advisories/GHSA-c6gr-qvv4-5v3f","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c6gr-qvv4-5v3f","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:30.906Z"},{"id":"sr-0450ee8a591ba295750256083c2fca59","url":"https://github.com/advisories/GHSA-c6gr-qvv4-5v3f","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-c6gr-qvv4-5v3f","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-03T17:45:13.791Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d2e581a5ba471070830ea776db17d446"],"technology":"dompurify","known_exclusions":[],"conditions_summary":"### Summary\n\nDOMPurify drops `attributeName` attributes whose value contains `href`, so an allowed `` or `` can't rewrite a link's href after sanitizing. The check compares the attribute name after `transformCaseFunc`, and that function doesn't lowercase in XHTML mode. In XHTML the attribute is spelled `attributeName`, so the comparison with `\"attributename\"` never matches and the guard does nothing.\n\nAn app that uses `PARSER_MEDIA_TYPE: 'application/xhtml+xml'` and allows `animate` and `attributeName` will keep ``. Clicking the parent link then runs the script.\n\nThis needs a non-default config, so going by SECURITY.md, this is a hardening bug rather than a bypass of the default config.\n\n### Details\n\nIn `_sanitizeAttributes` (dist/purify.js line 2216 in 3.4.16):\n\n```js\nconst lcName = transformCaseFunc(name);\n...\nif (lcName === \"attributename\" && stringMatch(value, \"href\")) {\n  _removeAttribute(name, currentNode, attr);\n  continue;\n}\n```\n\n`transformCaseFunc` is `stringToLowerCase` for text/html but the identity function for application/xhtml+xml, because XML names are case-sensitive. The XML parser keeps SVG'","public_affected_ranges":["<= 3.4.16"]},{"certainty":"source_listed","source_ids":["sr-0450ee8a591ba295750256083c2fca59"],"technology":"dompurify","known_exclusions":[],"conditions_summary":"### Summary\n\nDOMPurify drops `attributeName` attributes whose value contains `href`, so an allowed `` or `` can't rewrite a link's href after sanitizing. The check compares the attribute name after `transformCaseFunc`, and that function doesn't lowercase in XHTML mode. In XHTML the attribute is spelled `attributeName`, so the comparison with `\"attributename\"` never matches and the guard does nothing.\n\nAn app that uses `PARSER_MEDIA_TYPE: 'application/xhtml+xml'` and allows `animate` and `attributeName` will keep ``. Clicking the parent link then runs the script.\n\nThis needs a non-default config, so going by SECURITY.md, this is a hardening bug rather than a bypass of the default config.\n\n### Details\n\nIn `_sanitizeAttributes` (dist/purify.js line 2216 in 3.4.16):\n\n```js\nconst lcName = transformCaseFunc(name);\n...\nif (lcName === \"attributename\" && stringMatch(value, \"href\")) {\n  _removeAttribute(name, currentNode, attr);\n  continue;\n}\n```\n\n`transformCaseFunc` is `stringToLowerCase` for text/html but the identity function for application/xhtml+xml, because XML names are case-sensitive. The XML parser keeps SVG'","public_affected_ranges":["SEMVER: introduced 0; fixed 3.4.17"]}],"null_published_at":"2026-11-03T22:39:43.343Z","source_updated_at":"2026-10-22T16:24:24.000Z","source_disclosed_at":"2026-10-22T16:24:23.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T22:07:30.906Z"},{"id":"NVI-00010728","kind":"vulnerability","title":"DOMPurify: SMIL attributeName=href guard is skipped when PARSER_MEDIA_TYPE is application/xhtml+xml","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-c6gr-qvv4-5v3f"],"plain_summary":"GitHub lists this reviewed advisory for dompurify. 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-d2e581a5ba471070830ea776db17d446"],"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":[],"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-d2e581a5ba471070830ea776db17d446","url":"https://github.com/advisories/GHSA-c6gr-qvv4-5v3f","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-c6gr-qvv4-5v3f","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:30.906Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d2e581a5ba471070830ea776db17d446"],"technology":"dompurify","known_exclusions":[],"conditions_summary":"### Summary\n\nDOMPurify drops `attributeName` attributes whose value contains `href`, so an allowed `` or `` can't rewrite a link's href after sanitizing. The check compares the attribute name after `transformCaseFunc`, and that function doesn't lowercase in XHTML mode. In XHTML the attribute is spelled `attributeName`, so the comparison with `\"attributename\"` never matches and the guard does nothing.\n\nAn app that uses `PARSER_MEDIA_TYPE: 'application/xhtml+xml'` and allows `animate` and `attributeName` will keep ``. Clicking the parent link then runs the script.\n\nThis needs a non-default config, so going by SECURITY.md, this is a hardening bug rather than a bypass of the default config.\n\n### Details\n\nIn `_sanitizeAttributes` (dist/purify.js line 2216 in 3.4.16):\n\n```js\nconst lcName = transformCaseFunc(name);\n...\nif (lcName === \"attributename\" && stringMatch(value, \"href\")) {\n  _removeAttribute(name, currentNode, attr);\n  continue;\n}\n```\n\n`transformCaseFunc` is `stringToLowerCase` for text/html but the identity function for application/xhtml+xml, because XML names are case-sensitive. The XML parser keeps SVG'","public_affected_ranges":["<= 3.4.16"]}],"null_published_at":"2026-10-31T22:27:12.378Z","source_updated_at":"2026-10-22T16:24:24.000Z","source_disclosed_at":"2026-10-22T16:24:23.000Z","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":"2026-10-31T22:07:30.906Z"}],"next_cursor":null,"snapshot_revision":"42594"}