{"schemaVersion":3,"id":"CVE-2026-45074","aliases":["UBUNTU-CVE-2026-45074","DEBIAN-CVE-2026-45074"],"status":"published","duplicateOf":null,"title":null,"description":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.1.0 until 7.4.12 and 8.0.12, Cas2Handler builds the CAS service parameter from Request::getSchemeAndHttpHost(), which reflects an attacker-controlled Host header when framework.trusted_hosts is not configured; an attacker controlling another application registered with the same CAS server can replay a victim ticket against the Symfony application and authenticate as the victim. 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