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CVE-2026-41650

CVE-2026-41650 · fast-xml-parser XMLBuilder: XML Comment and CDATA Injection via Unescaped Delimiters

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

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Prior to version 5.7.0, XMLBuilder does not escape the "-->" sequence in comment content or the "]]>" sequence in CDATA sections when building XML from JavaScript objects. This allows XML injection when user-controlled data flows into comments or CDATA elements, leading to XSS, SOAP injection, or data manipulation. This issue has been patched in version 5.7.0.

CVSS 6.1 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • fast-xml-parser

    Versions
    • < 5.7.0: Affected

    No fix published

  • node-webfont Debian:12

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-10
    • 11.4.0+dfsg2+~cs35.7.26-11
    • 11.4.0+dfsg2+~cs35.7.26-12
    • 11.4.0+dfsg2+~cs35.7.26-13
    • 11.4.0+dfsg2+~cs35.7.26-14
    • 11.4.0+dfsg2+~cs35.7.26-15
    • 11.4.0+dfsg2+~cs35.7.26-16
    • 11.4.0+dfsg2+~cs35.7.26-18
    • 11.4.0+dfsg2+~cs35.7.26-19
    • 11.4.0+dfsg2+~cs35.7.26-20
    • 11.4.0+dfsg2+~cs35.7.26-21
    • 11.4.0+dfsg2+~cs35.7.26-22
    • 11.4.0+dfsg2+~cs35.7.26-7
    • 11.4.0+dfsg2+~cs35.7.26-8
    • 11.4.0+dfsg2+~cs35.7.26-9
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-webfont Debian:13

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-13
    • 11.4.0+dfsg2+~cs35.7.26-14
    • 11.4.0+dfsg2+~cs35.7.26-15
    • 11.4.0+dfsg2+~cs35.7.26-16
    • 11.4.0+dfsg2+~cs35.7.26-18
    • 11.4.0+dfsg2+~cs35.7.26-19
    • 11.4.0+dfsg2+~cs35.7.26-20
    • 11.4.0+dfsg2+~cs35.7.26-21
    • 11.4.0+dfsg2+~cs35.7.26-22
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-webfont Debian:14

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-13
    • 11.4.0+dfsg2+~cs35.7.26-14
    • 11.4.0+dfsg2+~cs35.7.26-15
    • 11.4.0+dfsg2+~cs35.7.26-16
    • 11.4.0+dfsg2+~cs35.7.26-18
    • 11.4.0+dfsg2+~cs35.7.26-19
    • 11.4.0+dfsg2+~cs35.7.26-20
    • 11.4.0+dfsg2+~cs35.7.26-21
    • 11.4.0+dfsg2+~cs35.7.26-22
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • fast-xml-parser npm

    Affected ranges
    • SEMVER: < 5.7.0

    Update to 5.7.0

  • node-webfont Ubuntu:24.04:LTS

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-7ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-webfont Ubuntu:25.10

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-10
    • 11.4.0+dfsg2+~cs35.7.26-13ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-webfont Ubuntu:26.10

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-18
    • 11.4.0+dfsg2+~cs35.7.26-19
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-webfont Ubuntu:26.04:LTS

    Versions
    • 11.4.0+dfsg2+~cs35.7.26-13ubuntu2
    • 11.4.0+dfsg2+~cs35.7.26-14
    • 11.4.0+dfsg2+~cs35.7.26-15
    • 11.4.0+dfsg2+~cs35.7.26-16build1
    • 11.4.0+dfsg2+~cs35.7.26-18
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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