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CVE-2026-83613

CVE-2026-83613 · xmldom: Quadratic-time attribute deduplication

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 8.7 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • xmldom

    Versions
    • <= 0.6.0: Affected

    No fix published

  • xmldom

    Versions
    • >= 0.9.0, < 0.9.12: Affected
    • >= 0.7.0, < 0.8.15: Affected

    No fix published

  • node-xmldom Debian:12

    Versions
    • 0.8.6-1
    • 0.9.10-1
    • 0.9.10-2
    • 0.9.11-1
    • 0.9.12-1
    • 0.9.5-1
    • 0.9.6-1
    • 0.9.8-1
    • 0.9.8-2
    • 0.9.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Debian:13

    Versions
    • 0.9.10-1
    • 0.9.10-2
    • 0.9.11-1
    • 0.9.12-1
    • 0.9.6-1
    • 0.9.8-1
    • 0.9.8-2
    • 0.9.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Debian:14

    Versions
    • 0.9.10-1
    • 0.9.10-2
    • 0.9.11-1
    • 0.9.6-1
    • 0.9.8-1
    • 0.9.8-2
    • 0.9.9-1
    Affected ranges
    • ECOSYSTEM: < 0.9.12-1

    Update to 0.9.12-1

  • @xmldom/xmldom npm

    Affected ranges
    • SEMVER: ≥ 0.7.0, < 0.8.15

    Update to 0.8.15

  • @xmldom/xmldom npm

    Affected ranges
    • SEMVER: ≥ 0.9.0, < 0.9.12

    Update to 0.9.12

  • xmldom npm

    Affected ranges
    • SEMVER: ≤ 0.6.0

    No fix published

  • node-xmldom Ubuntu:20.04:LTS

    Versions
    • 0.1.27+ds-1
    • 0.1.27+ds-1+deb10u2build0.20.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Ubuntu:22.04:LTS

    Versions
    • 0.5.0-1
    • 0.7.3-1
    • 0.7.5-1
    • 0.7.5-1ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Ubuntu:24.04:LTS

    Versions
    • 0.8.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Ubuntu:26.10

    Versions
    • 0.9.8-2
    • 0.9.10-2
    • 0.9.11-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-xmldom Ubuntu:26.04:LTS

    Versions
    • 0.9.6-1
    • 0.9.8-1
    • 0.9.8-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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