Description
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 specification. Starting in version 2.0.0 and prior to version 5.4.50, 6.4.29, and 7.3.7, 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. Starting in versions 5.4.50, 6.4.29, and 7.3.7, the `Request` class now ensures that URL paths always start with a `/`.
Affected products
sensiolabs: httpfoundation; sensiolabs: symfony
References5
- github.com/symfony/symfony/security/advisories/GHSA-3rg7-wf37-5… Vendor Advisory
- github.com/symfony/symfony/commit/9962b91b12bb791322fa73836b350… Patch
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony… Third Party Advisory
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony… Third Party Advisory
- symfony.com/blog/cve-2025-64500-incorrect-parsing-of-path-info-… Third Party Advisory
Metrics
- CVSS 3.1
-
7.3
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - EPSS — exploit probability
- 1% percentile: 73 · as of 10 November 2026
- CWE
- CWE-647
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.