{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34601", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-30T17:15:52.500Z", "datePublished": "2026-04-02T17:47:13.209Z", "dateUpdated": "2026-04-02T17:47:13.209Z"}, "containers": {"cna": {"title": "xmldom: XML injection via unsafe CDATA serialization allows attacker-controlled markup insertion", "problemTypes": [{"descriptions": [{"cweId": "CWE-91", "lang": "en", "description": "CWE-91: XML Injection (aka Blind XPath Injection)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-wh4c-j3r5-mjhp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-wh4c-j3r5-mjhp"}, {"name": "https://github.com/xmldom/xmldom/commit/2b852e836ab86dbbd6cbaf0537f584dd0b5ac184", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/2b852e836ab86dbbd6cbaf0537f584dd0b5ac184"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.8.12", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.12"}, {"name": "https://github.com/xmldom/xmldom/releases/tag/0.9.9", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.9"}], "affected": [{"vendor": "xmldom", "product": "xmldom", "versions": [{"version": "xmldom <= 0.6.0", "status": "affected"}, {"version": "@xmldom/xmldom < 0.8.12", "status": "affected"}, {"version": "@xmldom/xmldom >= 0.9.0, < 0.9.9", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-02T17:47:13.209Z"}, "descriptions": [{"lang": "en", "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator ]]> to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain text-only became active XML markup in the serialized output, enabling XML structure injection and downstream business-logic manipulation. This issue has been patched in xmldom version 0.6.0 and @xmldom/xmldom versions 0.8.12 and 0.9.9."}], "source": {"advisory": "GHSA-wh4c-j3r5-mjhp", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In xmldom versions 0.6.0 and prior and @xmldom/xmldom prior to versions 0.8.12 and 0.9.9, xmldom/xmldom allows attacker-controlled strings containing the CDATA terminator ]]> to be inserted into a CDATASection node. During serialization, XMLSerializer emitted the CDATA content verbatim without rejecting or safely splitting the terminator. As a result, data intended to remain text-only became active XML markup in the serialized output, enabling XML structure injection and downstream business-logic manipulation. This issue has been patched in xmldom version 0.6.0 and @xmldom/xmldom versions 0.8.12 and 0.9.9."}], "id": "CVE-2026-34601", "lastModified": "2026-04-02T18:16:31.933", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-02T18:16:31.933", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/commit/2b852e836ab86dbbd6cbaf0537f584dd0b5ac184"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.12"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.9"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-wh4c-j3r5-mjhp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-91"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}