{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83611", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.744Z", "datePublished": "2026-09-01T14:34:12.618Z", "dateUpdated": "2026-09-01T14:53:37.513Z"}, "containers": {"cna": {"title": "xmldom: Parser silently accepts a not-well-formed end tag whose name is followed by a line break and trailing content", "problemTypes": [{"descriptions": [{"cweId": "CWE-1286", "lang": "en", "description": "CWE-1286: Improper Validation of Syntactic Correctness of Input", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59"}, {"name": "https://github.com/xmldom/xmldom/pull/1071", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/pull/1071"}, {"name": "https://github.com/xmldom/xmldom/pull/1072", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/pull/1072"}, {"name": "https://github.com/xmldom/xmldom/commit/4430189660b0d380ee9c9ee7550a1358688e8828", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/4430189660b0d380ee9c9ee7550a1358688e8828"}, {"name": "https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.8.15", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.15"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.9.12", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.12"}], "affected": [{"vendor": "xmldom", "product": "xmldom", "versions": [{"version": "<= 0.6.0", "status": "affected"}]}, {"vendor": "@xmldom", "product": "xmldom", "versions": [{"version": ">= 0.9.0, < 0.9.12", "status": "affected"}, {"version": ">= 0.7.0, < 0.8.15", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-01T14:34:12.618Z"}, "descriptions": [{"lang": "en", "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. Prior to @xmldom/xmldom versions 0.8.15 and 0.9.12, and in xmldom version 0.6.0 and earlier, DOMParser.parseFromString() can silently accept an end tag such as </a\\njunk>, close the element, and discard the trailing content. On 0.9.x, the lib/sax.js end-tag validator inherits the multiline flag from reg(), allowing the first line to satisfy the anchored XML ETag production; older lines have no equivalent residue validation. This parser differential can bypass a parse-before-trust well-formedness gate, although it does not inject the discarded content; onError on 0.9.x and errorHandler on 0.8.x are the relevant reporting interfaces. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom."}], "source": {"advisory": "GHSA-6h8r-xr42-gp59", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T14:53:15.050065Z", "id": "CVE-2026-83611", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T14:53:37.513Z"}}]}}

{}

{}

{}

{}