CVE-2026-93954 Missing authorization in grimmory
Remote attackers can access application settings without proper authorization due to missing access controls in the Settings API endpoint.
- 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-2026-93954?
CVE-2026-93954 is a medium-severity missing authorization vulnerability in grimmory-tools grimmory, published on 19 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in grimmory-tools grimmory up to 3.3.3/3.4.1. Affected is the function AppSettingController.getAppSettings of the file backend/src/main/java/org/booklore/controller/AppSettingController.java of the component Settings API Endpoint. Such manipulation leads to incorrect authorization. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The name of the patch is 2b66ca6df8110f6b512e030b54c16b9fbe318f17. Applying a patch is advised to resolve this issue. PR #2558, merged as 53abc8b, moved the OIDC secret into a dedicated setting, but did not by itself restrict GET /api/v1/settings.
Which versions are affected by CVE-2026-93954?
How do I fix CVE-2026-93954?
No fix has been published for CVE-2026-93954 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-2026-93954 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93954 exists.
Sources
Also known as GHSA-h26m-rx2w-qwhg.