CVE-2026-83614High· 7.5▾ Twilightxmldom 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
— → 7.5
0.4% → 0.6%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
@xmldom/xmldom >= 0.7.0, <= 0.8.14@xmldom/xmldom >= 0.9.0, <= 0.9.11xmldom >= 0.3.0, <= 0.6.0Patched in:
@xmldom/xmldom 0.8.15@xmldom/xmldom 0.9.12Source: https://github.com/advisories/GHSA-93r5-fhx6-vmg9
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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