{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83613", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.744Z", "datePublished": "2026-09-01T14:38:49.617Z", "dateUpdated": "2026-09-01T14:38:49.617Z"}, "containers": {"cna": {"title": "xmldom: Quadratic-time attribute deduplication", "problemTypes": [{"descriptions": [{"cweId": "CWE-407", "lang": "en", "description": "CWE-407: Inefficient Algorithmic Complexity", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "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:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6"}, {"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/2c548f200cfec991cd5846627ef8f03542309213", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213"}, {"name": "https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3"}, {"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": "2026-09-01T14:38:49.617Z"}, "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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. 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-8344-3jmq-59r6", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "xmldom", "vendor": "xmldom", "versions": [{"status": "affected", "version": "<= 0.6.0"}]}, {"product": "xmldom", "vendor": "@xmldom", "versions": [{"status": "affected", "version": ">= 0.9.0, < 0.9.12"}, {"status": "affected", "version": ">= 0.7.0, < 0.8.15"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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, DOMHandler.startElement in lib/dom-parser.js inserts every parsed attribute through setAttributeNode, while NamedNodeMap.setNamedItem in lib/dom.js calls the linear getNamedItem or getNamedItemNS lookup for each insertion. A well-formed element with many distinct attributes therefore requires quadratic comparisons during DOMParser.parseFromString() and can stall a Node.js event loop before application validation. This issue is fixed in @xmldom/xmldom versions 0.8.15 and 0.9.12; no fixed version is available for xmldom."}], "id": "CVE-2026-83613", "lastModified": "2026-09-01T15:17:39.583", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-01T15:17:39.583", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/pull/1071"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/pull/1072"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/releases/tag/0.8.15"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/releases/tag/0.9.12"}, {"source": "security-advisories@github.com", "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.6.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "xmldom", "source": "cna", "vendor": "xmldom"}, "product": "xmldom", "vendor": "xmldom"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.9.0,0.9.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.7.0,0.8.15)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "xmldom", "source": "cna", "vendor": "@xmldom"}, "product": "xmldom", "vendor": "xmldom"}], "created": "2026-09-01T16:15:04.555958+00:00", "updated": "2026-09-01T17:15:05.385862+00:00", "vendors": ["xmldom", "xmldom$PRODUCT$xmldom"]}