CVE-2026-86731
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
Craft CMS versions 5.0.0-RC1 through 5.10.11 are missing an admin-target guard in UsersController::actionActivateUser (the users/activate-user action). While the action requires the administrateUsers permission, it does not call requireAdmin() when the targeted user is an administrator, unlike the mirror action actionDeactivateUser. As a result, an authenticated control panel user who is not an administrator but holds the administrateUsers permission can activate a pending or deliberately deactivated administrator account, which can lead to permission escalation when combined with resetting that account's password. The issue is fixed in Craft CMS 5.10.12.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| craftcms | cms | 5.0.0-RC1 < 5.10.12 | affected |
| craftcms | cms | 5.10.12 | unaffected |
Weaknesses
- CWE-862: Missing Authorization
References
- https://github.com/craftcms/cms/security/advisories/GHSA-jqf5-vfg6-8cx5
- https://www.vulncheck.com/advisories/craft-cms-5.0.0-rc1-before-5.10.12-permission-escalation-via-userscontroller
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