Improper privilege management in Craft CMS - #VU159601
Published: November 6, 2026
Vulnerability identifier: #VU159601
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated attacker to take over a deactivated non-admin account and inherit its previously assigned direct permissions.
The vulnerability exists due to Craft CMS retaining direct permissions when public registration reuses a deactivated account instead of clearing those permissions. An unauthenticated attacker can register using the deactivated account’s identity and choose a new password, gaining access with the retained privileges when email verification is disabled.
Affected software
Craft CMS
Remediation
Install security update from vendor's website.
Craft CMS - update to 5.11.2