Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.53, 6.4.41, 7.4.13, and 8.0.13, UrlGenerator::doGenerate() used strtr() dot-segment encoding that skipped every other chained ../ or ./ segment, allowing attacker-controlled route parameters to generate URLs that collapse to a different path under RFC 3986 normalization. This issue is fixed in versions 5.4.53, 6.4.41, 7.4.13, and 8.0.13.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| symfony | symfony | < 5.4.53, >= 6.0.0-BETA1, < 6.4.41, >= 7.0.0-BETA1, < 7.4.13, >= 8.0.0-BETA1, < 8.0.13 | — |
| symfony | routing | < 5.4.53, >= 6.0.0-BETA1, < 6.4.41, >= 7.0.0-BETA1, < 7.4.13, >= 8.0.0-BETA1, < 8.0.13 | — |
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 | 7.4.13+dfsg-1 | — |
| Debian 13 | symfony | 6.4.41+dfsg-0+deb13u1 | — |
| Debian 12 | symfony | 5.4.53+dfsg-0+deb12u1 | — |
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/routing | < 5.4.53 | 5.4.53 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/routing | >= 6.0.0, < 6.4.41 | 6.4.41 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/routing | >= 7.0.0, < 7.4.13 | 7.4.13 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/routing | >= 8.0.0, < 8.0.13 | 8.0.13 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/symfony | < 5.4.53 | 5.4.53 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/symfony | >= 6.0.0, < 6.4.41 | 6.4.41 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/symfony | >= 7.0.0, < 7.4.13 | 7.4.13 | GHSA-h5x3-xfc9-m39h |
| Packagist | symfony/symfony | >= 8.0.0, < 8.0.13 | 8.0.13 | GHSA-h5x3-xfc9-m39h |
References
- https://github.com/symfony/symfony/security/advisories/GHSA-h5x3-xfc9-m39h
- https://github.com/symfony/symfony/commit/4b63c3a3f7af04ecd79c89a594b0b02a01990b1d
- https://github.com/symfony/symfony/releases/tag/v5.4.53
- https://github.com/symfony/symfony/releases/tag/v6.4.41
- https://github.com/symfony/symfony/releases/tag/v7.4.13