CVE-2026-25716

HIGH
MEDIUM Priority: 0.01 BB Relevance: 64/100
Published: 2026-10-23 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: None
VI: Low
VA: High

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 Classification (1)

Affected Software (1)

VendorProductVersion
Hallo Welt! GmbH BlueSpice 5.0.0 < 5.1.11

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001830
Percentile 7.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00183
2026-10-28
0.00183

Intelligence Sources

mitre ref →
nvd ref →