Missing Authorization in Craft CMS - #VU145006
Published: August 25, 2026
Vulnerability identifier: #VU145006
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in UsersController::actionActivateUser when handling POST requests to users/activate-user. A remote user can submit a crafted request targeting a deactivated administrator account to escalate privileges.
Exploitation requires a control panel account with the administrateUsers permission.
Affected software
Craft CMS
Remediation
Install security update from vendor's website.
Craft CMS - update to 5.10.12