Missing Authorization Affecting craftcms/cms package, versions >=5.6.0, <5.9.15
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Apr 2026
- disclosed14 Apr 2026
- creditkaminuma
Introduced: 14 Apr 2026
CVE-2026-41128 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 5.9.15 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Missing Authorization via the actionSavePermissions process. An attacker can remove all group memberships from arbitrary users by submitting an empty groups parameter, resulting in immediate revocation of all permissions inherited from those groups. This is only exploitable if the attacker has a control panel account with accessCp and viewUsers permissions and the application is running the Pro edition or higher.