Vulnerability · Published Nov 12, 2025 · Assigned by GitHub_M
CVE-2025-64500Symfony's incorrect parsing of PATH_INFO can lead to limited authorization bypass
High 7.3
In plain English
A high-severity security flaw in symfony from symfony. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | symfony | 5.4.23+dfsg-1+deb12u5 | DEBIAN-CVE-2025-64500 |
| Debian:13 | symfony | 6.4.21+dfsg-2+deb13u1 | DEBIAN-CVE-2025-64500 |
| Debian:14 | symfony | 7.4.0~rc1+dfsg-1 | DEBIAN-CVE-2025-64500 |
| Packagist | symfony/http-foundation | 5.4.50 | GHSA-3rg7-wf37-54rm |
| Packagist | symfony/http-foundation | 6.4.29 | GHSA-3rg7-wf37-54rm |
| Packagist | symfony/http-foundation | 7.3.7 | GHSA-3rg7-wf37-54rm |
| Packagist | symfony/symfony | 7.3.7 | GHSA-3rg7-wf37-54rm |
| Packagist | symfony/symfony | 6.4.29 | GHSA-3rg7-wf37-54rm |
| Packagist | symfony/symfony | 5.4.50 | GHSA-3rg7-wf37-54rm |
| Ubuntu:25.10 | symfony | no fix listed | UBUNTU-CVE-2025-64500 |
| Ubuntu:26.04:LTS | symfony | no fix listed | UBUNTU-CVE-2025-64500 |
| Ubuntu:26.10 | symfony | no fix listed | UBUNTU-CVE-2025-64500 |
Affected products (as reported)
Weakness: CWE-647 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://github.com/symfony/symfony/security/advisories/GHSA-3rg7-wf37-54rm x_refsource_CONFIRM
- https://github.com/symfony/symfony/commit/9962b91b12bb791322fa73836b350836b6db7cac x_refsource_MISC
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2025-64500.yaml x_refsource_MISC
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2025-64500.yaml x_refsource_MISC
- https://symfony.com/blog/cve-2025-64500-incorrect-parsing-of-path-info-can-lead-to-limited-authorization-bypass x_refsource_MISC