{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83609", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.743Z", "datePublished": "2026-09-01T14:29:40.475Z", "dateUpdated": "2026-09-01T18:10:19.349Z"}, "containers": {"cna": {"title": "xmldom: Creation-time XML Name/QName validation is bypassable via an embedded line terminator, allowing injection on the default serialization path", "problemTypes": [{"descriptions": [{"cweId": "CWE-91", "lang": "en", "description": "CWE-91: XML Injection (aka Blind XPath Injection)", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-625", "lang": "en", "description": "CWE-625: Permissive Regular Expression", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-3px3-54cx-rmw9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-3px3-54cx-rmw9"}, {"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/commit/7b2ec67e1750daadd0bb06c92e875e726544a362", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362"}, {"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": ">= 0.9.0, < 0.9.12", "status": "affected"}]}, {"vendor": "@xmldom", "product": "xmldom", "versions": [{"version": ">= 0.9.0, < 0.9.12", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-01T14:29:40.475Z"}, "descriptions": [{"lang": "en", "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.0 until 0.9.12, the shared reg() builder in lib/grammar.js compiles the anchored QName_exact validator with the multiline flag, so ^ and $ validate only one line instead of the complete name. createElementNS, createAttributeNS, createDocumentType, and createAttribute consequently accept a malformed XML name whose first line is valid and whose later text injects markup when serialized through either the default path or requireWellFormed: true. The triggering ECMAScript line terminators are U+000A, U+000D, U+2028, and U+2029. This issue is fixed in @xmldom/xmldom version 0.9.12."}], "source": {"advisory": "GHSA-3px3-54cx-rmw9", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T17:34:16.848093Z", "id": "CVE-2026-83609", "options": [{"Exploitation": "none"}, {"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": "2026-09-01T18:10:19.349Z"}}]}}

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