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CVE-2026-45074

Symfony: Cas2Handler Derives CAS service URL from Client Host Header → Cross-Service Ticket Replay PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
symfony / symfonyaffected >= 7.1.0-BETA1, < 7.4.12; affected >= 8.0.0-BETA1, < 8.0.12
symfony / security-httpaffected >= 7.1.0-BETA1, < 7.4.12; affected >= 8.0.0-BETA1, < 8.0.12

CWE

CWE-290

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.