Medium (6.1) in apereo central authentication service. EPSS 8.2% chance of exploitation in the next 30 days. Fixed in org.apereo.cas:cas-server-core-web 6.4.2.
Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.
Severity
CVSS 3.1
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
8.2% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)