{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83608","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-31T20:36:25.743Z","datePublished":"2026-09-01T14:27:26.057Z","dateUpdated":"2026-09-04T01:56:15.954Z"},"containers":{"cna":{"title":"xmldom: DocType `name` Injection 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-27p8-2357-5qqv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqv"},{"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/57aec90ac57b4408ae7c5d1746bf2a693b5ed90e","tags":["x_refsource_MISC"],"url":"https://github.com/xmldom/xmldom/commit/57aec90ac57b4408ae7c5d1746bf2a693b5ed90e"},{"name":"https://github.com/xmldom/xmldom/commit/85f12eb4d14b44de33216cfb72b50af4d24e9fdd","tags":["x_refsource_MISC"],"url":"https://github.com/xmldom/xmldom/commit/85f12eb4d14b44de33216cfb72b50af4d24e9fdd"},{"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":"2026-09-01T14:27:26.057Z"},"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, the DOCUMENT_TYPE_NODE branch in lib/dom.js validates publicId, systemId, and internalSubset under requireWellFormed: true but emits DocumentType.name verbatim. A name containing > or whitespace can terminate the <!DOCTYPE ...> declaration and inject sibling markup; the value can be supplied through createDocumentType() on the 0.8.x and unscoped lines or through a direct DocumentType.name property write on every affected line. The default path and legacy creation-time behavior remain permissive, while the vulnerable strict path fails to enforce an XML Name. 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-27p8-2357-5qqv","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-04T01:55:40.466309Z","id":"CVE-2026-83608","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":"2026-09-04T01:56:15.954Z"}}]}}