{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83614", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.744Z", "datePublished": "2026-09-01T14:41:42.582Z", "dateUpdated": "2026-09-01T14:41:42.582Z"}, "containers": {"cna": {"title": "xmldom: Quadratic-time parsing via the malformed-input recovery path \u2014 `parseElementStartPart` re-scan and `normalize()` adjacent-text merge", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"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-93r5-fhx6-vmg9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/xmldom/xmldom/security/advisories/GHSA-93r5-fhx6-vmg9"}, {"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/0748720b620555f8c222782dcab575cf0cf403b4", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/0748720b620555f8c222782dcab575cf0cf403b4"}, {"name": "https://github.com/xmldom/xmldom/commit/f40ccb861eee0acbf5ee4feb9a34932e87b329c9", "tags": ["x_refsource_MISC"], "url": "https://github.com/xmldom/xmldom/commit/f40ccb861eee0acbf5ee4feb9a34932e87b329c9"}, {"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": ">= 0.3.0, <= 0.6.0", "status": "affected"}]}, {"vendor": "@xmldom", "product": "xmldom", "versions": [{"version": ">= 0.7.0, < 0.8.15", "status": "affected"}, {"version": ">= 0.9.0, < 0.9.12", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-01T14:41:42.582Z"}, "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 versions 0.3.0 through 0.6.0, two independent quadratic paths can cause denial of service. In lib/sax.js, parseElementStartPart repeatedly rescans a malformed tag name to the next > during single-character recovery; in lib/dom.js, normalize() repeatedly removes and appends adjacent text nodes, causing quadratic reindexing and string rebuilding. The first path is reachable through default DOMParser.parseFromString() processing, while the second is also reachable through a direct normalize() call on a programmatically constructed DOM, and endDocument invokes that normalization after parsing. 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-93r5-fhx6-vmg9", "discovery": "UNKNOWN"}}}}

{}

{}

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{}