DescriptionCKEditor4 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs999909

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ckeditor (PTS)bullseye4.16.0+dfsg-2vulnerable
sid, trixie4.22.1+dfsg1-2fixed
ckeditor3 (PTS)bookworm, bullseye, sid, trixie3.6.6.1+dfsg-7fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ckeditor3source(unstable)(not affected)


[bullseye] - ckeditor <no-dsa> (Minor issue)
[buster] - ckeditor <no-dsa> (Minor issue)
[stretch] - ckeditor <no-dsa> (Minor issue)
- ckeditor3 <not-affected> (Advanced Content Filter introduced in v4.1) (v4.17.0)

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