Cross-site Scripting (XSS) vulnerability in BlueSpiceUserSidebar extension of BlueSpice allows user with regular account and edit permissions to inject arbitrary HTML into the personal menu navigation of their own and other users. This allows for targeted attacks.
Severity
CVSS 3.1
5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)