symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components
CVE-2026-45074 is fixed in symfony on 1 platform by DEBIAN-CVE-2026-45074 (version 7.4.12+dfsg-1), released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.
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. This issue is fixed in versions 7.4.12 and 8.0.12.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| symfony · Debian 14 | 7.4.12+dfsg-1 | DEBIAN-CVE-2026-45074 | May 27, 2026 |
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