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CVE-2026-83605

CVE-2026-83605 · xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed

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 0.8.14 and 0.9.11, and in xmldom version 0.6.0 and earlier, Element.setAttribute() calls the private _createAttribute(name) path without validating the attribute name, while Document.createAttribute(name) validates against QName. XMLSerializer.serializeToString() emits attribute names verbatim, and requireWellFormed: true did not validate them, so a crafted name can terminate the intended attribute and inject additional attributes, including event handlers, into browser-consumed output; synthesized xmlns:PREFIX declarations expose the same unchecked-name boundary. This issue is fixed in @xmldom/xmldom versions 0.8.14 and 0.9.11; 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
    • >= 0.7.0, < 0.8.14: Affected
    • >= 0.9.0, < 0.9.11: 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
    • 0.9.6-1
    • 0.9.8-1
    • 0.9.8-2
    • 0.9.9-1
    Affected ranges
    • ECOSYSTEM: < 0.9.11-1

    Update to 0.9.11-1

  • @xmldom/xmldom npm

    Affected ranges
    • SEMVER: ≥ 0.9.0, < 0.9.11

    Update to 0.9.11

  • @xmldom/xmldom npm

    Affected ranges
    • SEMVER: ≥ 0.7.0, < 0.8.14

    Update to 0.8.14

  • 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:26.04: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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