CVE-2026-41128
Craft CMS has a Missing Authorization Check on User Group Removal via save-permissions Action
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
21 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
Craft CMS is a content management system (CMS). In versions 5.6.0 through 5.9.14, the `actionSavePermissions()` endpoint allows a user with only `viewUsers` permission to remove arbitrary users from all user groups. While `_saveUserGroups()` enforces per-group authorization for additions, it performs no equivalent authorization check for removals, so submitting an empty `groups` value removes all existing group memberships. Version 5.9.15 contains a patch.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
craftcms · cmsWant to know if your infrastructure is exposed to this?
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