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](https://github.com/symfony/symfony/commit/9962b91b12bb791322fa73836b350836b6db7cac) 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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-64500US | — | — | ||
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Symfony's HttpFoundation component defines an object-oriented layer for the HTTP s… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2025-64500.yamlWEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2025-64500.yamlWEB
- https://github.com/symfony/symfonyPACKAGE
- https://github.com/symfony/symfony/commit/9962b91b12bb791322fa73836b350836b6db7cacWEB
- https://github.com/symfony/symfony/security/advisories/GHSA-3rg7-wf37-54rmWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-64500ADVISORY
- https://symfony.com/blog/cve-2025-64500-incorrect-parsing-of-path-info-can-lead-to-limited-authorization-bypassWEB
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan