CVE-2026-59190 Grav Admin Plugin — IDOR Privilege Escalation via saveUser()
An authenticated attacker with user-management permissions can change any user's password, including super admins, due to missing authorization checks in the Grav Admin Plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59190?
CVE-2026-59190 is a high-severity missing authorization vulnerability in getgrav grav, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
grav-plugin-admin is an HTML user interface that provides a way to configure Grav and create and modify pages. In 1.10.52 and earlier, an authenticated attacker with admin.users permission can change the password of any user account, including the super administrator, by sending a direct POST request to /admin/user/{username}?task=save with data[password] because saveUser authorizes the caller's user-management permission but does not verify whether the caller may edit the target user. This issue is expected to be fixed in version 1.10.53.
Weakness: CWE-639
Which versions are affected by CVE-2026-59190?
How do I fix CVE-2026-59190?
No fix has been published for CVE-2026-59190 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-59190 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59190 exists.
Sources
Also known as GHSA-p97c-g455-q447.