Improper privilege management in Craft CMS - CVE-2026-84795
Published: August 19, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU144277
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:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84795
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain administrator access.
The vulnerability exists due to improper privilege management in User::afterSave() when registering a new account with the email address of a previously deactivated administrator account. A remote attacker can register a crafted account to gain administrator access.
Exploitation requires public registration to be enabled, and email verification to be disabled.
Affected software
Craft CMS
How to mitigate CVE-2026-84795
Install security update from vendor's website.
Craft CMS - update to 5.10.11