Improper access control in Craft CMS - CVE-2026-32267
Published: June 16, 2026
Vulnerability identifier: #VU134662
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-32267
CWE-ID: CWE-284
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->actionImpersonateWithToken() when handling a crafted request that re-dispatches from a preview URL with a valid token. A remote user can append crafted action and user parameters to a valid preview URL to escalate privileges.
The issue can also be exploited by an unauthenticated user who has been sent a shared preview URL containing a valid token.
Affected software
Craft CMS
How to mitigate CVE-2026-32267
Install security update from vendor's website.
Craft CMS - addressed in versions 4.17.6, 5.9.12