{"id":"CVE-2026-83614","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-83614","summary":"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…","details":"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.","published":"2026-09-01T15:17:39.733","modified":"2026-09-01T15:17:39.733","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/xmldom/xmldom/commit/0748720b620555f8c222782dcab575cf0cf403b4","label":"xmldom/xmldom@0748720"},"references":[{"type":"WEB","url":"https://github.com/xmldom/xmldom/commit/0748720b620555f8c222782dcab575cf0cf403b4"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/commit/f40ccb861eee0acbf5ee4feb9a34932e87b329c9"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/pull/1071"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/pull/1072"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/releases/tag/0.8.15"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/releases/tag/0.9.12"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/security/advisories/GHSA-93r5-fhx6-vmg9"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-01T15:17:39.733"}}