CVE-2017-1000071: Apereo Phpcas

High severity, CVSS 8.1. EPSS: 3.5% chance of exploitation in the next 30 days.

Jasig phpCAS version 1.3.4 is vulnerable to an authentication bypass in the validateCAS20 function when configured to authenticate against an old CAS server.

Affected products

• Apereo Phpcas: version 1.3.4 only

Published 2017-07-17. Last modified 2026-06-17.