AIKIDO-2026-933735
craftcms/ckeditor is vulnerable to Broken Access Control
71
High Risk
This Affects:
craftcms/ckeditorTL;DR
CkeditorController::actionDuplicateNestedEntry() duplicates a nested entry identified by user-supplied entryId and targetOwnerId parameters without verifying that the requesting user can view the source entry or save the target owner element. A control panel user can duplicate nested entries into owners they have no save permission for, and view entry content they have no view permission for, by supplying element IDs alone. The fix requires the looked-up element to be a nested element and checks source view and target save permissions before duplicating.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use nested entries within CKEditor fields.
Background info
craftcms/ckeditor is vulnerable to Broken Access Control in versions 4.0.0 - 5.6.1.
How to fix this
Upgrade the craftcms/ckeditor library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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