{"id":"CVE-2026-83613","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-83613","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 version 0.6.0…","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 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.","published":"2026-09-01T15:17:39.583","modified":"2026-09-01T15:17:39.583","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213","label":"xmldom/xmldom@2c548f2"},"references":[{"type":"WEB","url":"https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213"},{"type":"WEB","url":"https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3"},{"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-8344-3jmq-59r6"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-01T15:17:39.583"}}