What’s Vulnerable › Vulnerabilities
CVE-2026-25716: BlueSpiceUserManager: Missing authorization in REST endpoints for blocking and unblocking users
- Severity: high (CVSS 7.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-23 · updated 2026-10-29
- Weakness: CWE-862
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.
Affected products
- Hallo Welt! GmbH BlueSpice: from 5.0.0 before 5.1.11; from 5.2.0 before 5.2.7 — fixed in 5.1.11, 5.2.7
How to fix
Upgrade to a fixed version: Hallo Welt! GmbH BlueSpice 5.1.11, 5.2.7. Check the vendor advisory for mitigations.
References
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