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CVE-2026-116804

CVE-2026-116804 · DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content

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

DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.

CVSS 5.1 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • dompurify

    Versions
    • ≥ 3.4.4, < 3.4.17: Affected (semver)
    • 3.4.17: Not affected (semver)

    Update to 3.4.17

  • dompurify npm

    Affected ranges
    • SEMVER: ≥ 3.4.4, < 3.4.17

    Update to 3.4.17

Original sources

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