CVE-2026-41128
MEDIUM EPSS 16.0%
Published Apr 22, 20262mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 4.0
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
Description
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 Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
16.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-862 Missing Authorization Authorization
References 2
- github.com https://github.com/craftcms/cms/commit/b135384808ad43fcf8836a9dd9b877fb0087bc27
- github.com https://github.com/craftcms/cms/security/advisories/GHSA-jq2f-59pj-p3m3
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.