High severity8.1OSV Advisory· Published Jul 14, 2026· Updated Jul 15, 2026
CVE-2026-45074
CVE-2026-45074
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. This issue is fixed in versions 7.4.12 and 8.0.12.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symfony/security-httpPackagist | >= 7.1.0, < 7.4.12 | 7.4.12 |
symfony/security-httpPackagist | >= 8.0.0, < 8.0.12 | 8.0.12 |
symfony/symfonyPackagist | >= 7.1.0, < 7.4.12 | 7.4.12 |
symfony/symfonyPackagist | >= 8.0.0, < 8.0.12 | 8.0.12 |
Affected products
1- Range: v8.0.11, v7.4.11, v8.0.10, …
Patches
Vulnerability mechanics
References
8- github.com/symfony/symfony/commit/5ba145dba702404801bdf9e7e8d6df170060d541nvdPatchWEB
- github.com/symfony/symfony/security/advisories/GHSA-j8gj-9rm5-4xhxnvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-j8gj-9rm5-4xhxghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45074.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45074.yamlghsaWEB
- github.com/symfony/symfony/releases/tag/v7.4.12nvdProductRelease Notes
- github.com/symfony/symfony/releases/tag/v8.0.12nvdProductRelease Notes
- symfony.com/cve-2026-45074ghsaWEB
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