CVE-2026-65603 - Grav Login Plugin 3.8.11 Privilege Escalation via Profile Update

CVE-2026-65603 - Grav Login Plugin 3.8.11 Privilege Escalation via Profile Update

https://cvefeed.io/rssfeed/latest.atom / Wed, 07/22/2026 - 16:06
CVE ID :CVE-2026-65603
Published : July 22, 2026, 12:18 p.m. | 32 minutes ago
Description :The Grav Login plugin (grav-plugin-login) versions <= 3.8.11 contain a privilege escalation flaw in the authenticated profile self-update handler (processUserProfile(), the update_user task). Unlike the registration handler, this handler does not strip privilege fields ('groups','access') from user-submitted form data before persisting them. When an administrator has added 'groups' and/or 'access' to plugins.login.user_registration.fields and the default 'regular'/DataUser account backend is in use, a low-privilege authenticated user can POST crafted profile form data (e.g. access[admin][super]=true) to escalate to super-admin, enabling admin panel access, scheduler abuse (RCE), and Twig evaluation. Fixed in 3.8.12.
Severity: 8.8 | HIGH
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