xmldom: Quadratic-time attribute deduplication
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.3%
exploitation probability
0.3%top 72% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
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
public PoCs found — 1
cve_referencegithub.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqvunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/xmldom/xmldom/commit/2c548f200cfec991cd5846627ef8f03542309213https://github.com/xmldom/xmldom/commit/cfb09b5dbeb035fdfedc9f01e2bbaf226bf47cf3https://github.com/xmldom/xmldom/pull/1071https://github.com/xmldom/xmldom/pull/1072https://github.com/xmldom/xmldom/releases/tag/0.8.15https://github.com/xmldom/xmldom/releases/tag/0.9.12https://github.com/xmldom/xmldom/security/advisories/GHSA-27p8-2357-5qqvhttps://github.com/xmldom/xmldom/security/advisories/GHSA-8344-3jmq-59r6