CVE-2026-84795

Critical

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.

SeverityCritical

CVSS9.8

Exploit probability—

ProductCms

PublishedSep 2, 2026

First seenSep 2, 2026

Weakness typeCWE-269Improper privilege management

How to fix

Update

craftcms cms5.10.11 or later

Vendor advisories

github.com/craftcms/cms/security/advisories/GHSA-242m-9wq7-vhwq

Affected products

Product	Affected versions	Fixed in
craftcms cms	5.0.0-RC1 ≤ v < 5.10.11	5.10.11

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