Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass
Description
The Request class improperly interprets some PATH_INFO in a way that leads to representing some URLs with a path that doesn't start with a /. This can allow bypassing some access control rules that are built with this /-prefix assumption.
Resolution
The Request class now ensures that URL paths always start with a /.
The patch for this issue is available here for branch 5.4.
Credits
We would like to thank Andrew Atkinson for discovering the issue, Chris Smith for reporting it and Nicolas Grekas for providing the fix.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | symfony/http-foundation | < 5.4.50, >= 6.0.0, < 6.4.29, >= 7.0.0, < 7.3.7 | 5.4.50, 6.4.29, 7.3.7 |
| Paquete de Composer | symfony/symfony | >= 2.0.0, < 5.4.50, >= 6.0.0, < 6.4.29, >= 7.0.0, < 7.3.7 | 5.4.50, 6.4.29, 7.3.7 |
Referencias
- https://github.com/symfony/symfony/security/advisories/GHSA-3rg7-wf37-54rm
- https://nvd.nist.gov/vuln/detail/CVE-2025-64500
- https://github.com/symfony/symfony/commit/9962b91b12bb791322fa73836b350836b6db7cac
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2025-64500.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2025-64500.yaml
- https://github.com/symfony/symfony
- https://symfony.com/blog/cve-2025-64500-incorrect-parsing-of-path-info-can-lead-to-limited-authorization-bypass
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Debilidad (CWE)
CWE-647- Plataforma
- Composer
- Paquete
symfony/http-foundation, symfony/symfony- Publicada
- 12.11.2025
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-3rg7-wf37-54rm - CC BY 4.0
Historial de vulnerabilidades: symfony/http-foundation
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 14
- Primera → última
- 12.2019 06.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 1
- Alta 3
- Media 8
- Baja 2
Divulgaciones por año
- 2019: 2
- 2020: 1
- 2021: 0
- 2022: 4
- 2023: 0
- 2024: 5
- 2025: 1
- 2026: 1
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Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass esta entrada
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