{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83607", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.743Z", "datePublished": "2026-09-01T14:23:58.797Z", "dateUpdated": "2026-09-01T15:28:37.947Z"}, "containers": {"cna": {"title": "xmldom: Element name injection via createElement() bypasses requireWellFormed", "problemTypes": [{"descriptions": [{"cweId": "CWE-91", "lang": "en", "description": "CWE-91: XML Injection (aka Blind XPath Injection)", "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-w2rr-34g9-rvrj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-w2rr-34g9-rvrj"}, {"name": "https://github.com/xmldom/xmldom/pull/1043", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/pull/1043"}, {"name": "https://github.com/xmldom/xmldom/pull/1050", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/pull/1050"}, {"name": "https://github.com/xmldom/xmldom/commit/cba1321218b069182695813fa7565653708e172e", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/cba1321218b069182695813fa7565653708e172e"}, {"name": "https://github.com/xmldom/xmldom/commit/d8212e632507eaf1d9f609657dd4c56abeb12d44", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/d8212e632507eaf1d9f609657dd4c56abeb12d44"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.8.14", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.14"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.9.11", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.11"}], "affected": [{"vendor": "xmldom", "product": "xmldom", "versions": [{"version": "<= 0.6.0", "status": "affected"}]}, {"vendor": "@xmldom", "product": "xmldom", "versions": [{"version": ">= 0.7.0, < 0.8.14", "status": "affected"}, {"version": ">= 0.9.0, < 0.9.11", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-01T14:23:58.797Z"}, "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 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Document.createElement(tagName) stores an unvalidated element name and XMLSerializer.serializeToString() emits that name verbatim. The requireWellFormed: true path did not validate the element qualified name or synthesized xmlns:PREFIX declaration, so attacker-controlled tag names could inject attributes, elements, or processing instructions into serialized XML or HTML and could cause cross-site scripting when browser-consumed. The unchecked values violate the XML QName constraint, and default serialization and creation-time createElement() behavior remain permissive. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; no fixed version is available for xmldom."}], "source": {"advisory": "GHSA-w2rr-34g9-rvrj", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-w2rr-34g9-rvrj", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T15:28:20.162507Z", "id": "CVE-2026-83607", "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": "2026-09-01T15:28:37.947Z"}}]}}

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