CVE-2023-4612: Apereo Central Authentication Service

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper Authentication vulnerability in Apereo CAS in jakarta.servlet.http.HttpServletRequest.getRemoteAddr method allows Multi-Factor Authentication bypass.This issue affects CAS: through 7.0.0-RC7. It is unknown whether in new versions the issue will be fixed. For the date of publication there is no patch, and the vendor does not treat it as a vulnerability.

Affected products

• Apereo Central Authentication Service: before 7.0.0 (fixed in 7.0.0); version 7.0.0 only

Published 2023-11-09. Last modified 2026-06-17.