Vulnerability · Published Sep 2, 2026 · Assigned by VulnCheck
CVE-2026-84795Craft CMS before 5.10.11 Authentication Bypass via Admin Flag Inheritance
Critical 9.8
In plain English
A critical-severity privilege mismanagement in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 56.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Craft CMS before 5.10.11 fails to validate the admin flag during user registration, allowing it to persist from deactivated admin accounts. Attackers can register with a deactivated admin's email address to inherit administrator privileges when public registration and disabled email verification are configured.
Affected products (as reported)
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-242m-9wq7-vhwq) vendor-advisory
- VulnCheck Advisory: Craft CMS before 5.10.11 Authentication Bypass via Admin Flag Inheritance third-party-advisory