CVE-2026-25716 BlueSpiceUserManager: Missing authorization in REST endpoints for blocking and unblocking users
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-25716?
CVE-2026-25716 is a high-severity vulnerability in Hallo Welt! GmbH BlueSpice, published on 23 Oct 2026.
Official description
Missing Authorization vulnerability in Hallo Welt! GmbH BlueSpice (Extension:BlueSpiceUserManager) allows any authenticated user without special privileges to block or unblock arbitrary user accounts, including administrators. The REST endpoints /bs-usermanager/v1/block/create and /bs-usermanager/v1/block/delete call UserManager::blockUser() and UserManager::unblockUser(), which do not verify the permissions of the acting user. This allows locking out all administrators (denial of service) and lifting blocks imposed by administrators.
This issue affects BlueSpice: from 5.0.0 before 5.1.11, from 5.2.0 before 5.2.7.
Weakness: CWE-862
Which versions are affected by CVE-2026-25716?
How do I fix CVE-2026-25716?
No fix has been published for CVE-2026-25716 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-25716 being exploited?
There is no known exploitation of CVE-2026-25716 in the wild and no public exploit code.
Sources
Also known as GHSA-vr6v-xrj8-f9m9.