Cross-site Scripting (XSS) vulnerability in BlueSpiceBookshelf extension of BlueSpice allows user with regular account and edit permissions to inject arbitrary HTML into the book navigation.
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)