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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| symfony | symfony | >= 7.1.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 | — |
| symfony | security-http | >= 7.1.0-BETA1, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | symfony | 7.4.12+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | symfony | No fix yet | — |
| Ubuntu 26.04 LTS | symfony | No fix yet | — |
| Ubuntu 25.10 | symfony | No fix yet | — |
| Ubuntu 16.04 LTS | symfony | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 22.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 20.04 LTS | symfony | No fix yet | — |
| Ubuntu Pro 18.04 LTS | symfony | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symfony/security-http | >= 7.1.0, < 7.4.12 | 7.4.12 | GHSA-j8gj-9rm5-4xhx |
| Packagist | symfony/security-http | >= 8.0.0, < 8.0.12 | 8.0.12 | GHSA-j8gj-9rm5-4xhx |
| Packagist | symfony/symfony | >= 7.1.0, < 7.4.12 | 7.4.12 | GHSA-j8gj-9rm5-4xhx |
| Packagist | symfony/symfony | >= 8.0.0, < 8.0.12 | 8.0.12 | GHSA-j8gj-9rm5-4xhx |