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CVE-2021-41164

CVE-2021-41164 · Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.

CVSS 8.2 · High · EPSS 1.3% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • ckeditor4

    Versions
    • < 4.17.0: Affected

    No fix published

  • ckeditor Debian:12

    Affected ranges
    • ECOSYSTEM: < 4.19.0+dfsg-1

    Update to 4.19.0+dfsg-1

  • ckeditor4 npm

    Affected ranges
    • SEMVER: < 4.17.0

    Update to 4.17.0

  • ckeditor Ubuntu:Pro:16.04:LTS

    Versions
    • 4.4.4+dfsg1-3
    • 4.5.6+dfsg-1
    • 4.5.7+dfsg-1
    • 4.5.7+dfsg-2
    • 4.5.7+dfsg-2ubuntu0.16.04.1~esm1
    • 4.5.7+dfsg-2ubuntu0.16.04.1~esm2
    • 4.5.7+dfsg-2ubuntu0.16.04.1~esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:16.04:LTS

    Versions
    • 4.9-1
    • 5.1-1
    • 5.2-1
    • 5.2-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:16.04:LTS

    Versions
    • 4.2.11-2
    • 4.2.12-3
    • 4.2.12-4
    • 4.2.12-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor Ubuntu:Pro:18.04:LTS

    Versions
    • 4.5.7+dfsg-2
    • 4.5.7+dfsg-2ubuntu0.18.04.1
    • 4.5.7+dfsg-2ubuntu0.18.04.1+esm1
    • 4.5.7+dfsg-2ubuntu0.18.04.1+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor3 Ubuntu:18.04:LTS

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

    No fix published

  • ldap-account-manager Ubuntu:18.04:LTS

    Versions
    • 5.7-1
    • 6.1-1
    • 6.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:Pro:18.04:LTS

    Versions
    • 4.4.1-5
    • 4.4.2-1
    • 4.4.2-2
    • 4.4.2-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor Ubuntu:Pro:20.04:LTS

    Versions
    • 4.11.1+dfsg-1
    • 4.12.1+dfsg-1
    • 4.12.1+dfsg-1ubuntu0.1
    • 4.12.1+dfsg-1ubuntu0.1+esm1
    • 4.12.1+dfsg-1ubuntu0.1+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor3 Ubuntu:20.04:LTS

    Versions
    • 3.6.6.1+dfsg-3
    • 3.6.6.1+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:20.04:LTS

    Versions
    • 6.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:20.04:LTS

    Versions
    • 4.4.3-2
    • 4.4.3-2+deb10u3build0.20.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor3 Ubuntu:22.04:LTS

    Versions
    • 3.6.6.1+dfsg-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:22.04:LTS

    Versions
    • 7.5-1
    • 7.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:22.04:LTS

    Versions
    • 4.4.4+dfsg-2ubuntu1
    • 4.4.4+dfsg-2ubuntu1.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor Ubuntu:Pro:22.04:LTS

    Versions
    • 4.16.0+dfsg-2
    • 4.16.2+dfsg-1
    • 4.16.2+dfsg-1ubuntu0.1~esm1
    • 4.16.2+dfsg-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ckeditor3 Ubuntu:24.04:LTS

    Versions
    • 3.6.6.1+dfsg-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:24.04:LTS

    Versions
    • 8.3-1
    • 8.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:24.04:LTS

    Versions
    • 4.4.4+dfsg-2ubuntu1
    • 4.4.4+dfsg-2ubuntu2
    • 4.4.7+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:25.10

    Versions
    • 9.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • request-tracker4 Ubuntu:25.10

    Versions
    • 4.4.7+dfsg-4syncable1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ldap-account-manager Ubuntu:26.04:LTS

    Versions
    • 9.0-1
    • 9.0-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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