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🛡️ CVE-2025-64500 — httpfoundation

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-647 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2025-64500 is classified as CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions. The product defines policy namespaces and makes authorization decisions based on the assumption that a URL is canonical. This can allow a non-canonical URL to bypass the authorization.

Affected software

CVE-2025-64500 is recorded against 4 packages.

  • httpfoundation (from 7.0.0 up to 7.3.7)
  • symfony (from 7.0.0 up to 7.3.7)
  • symfony/http-foundation (from 7.0.0 up to 7.3.7)
  • symfony/symfony (from 7.0.0 up to 7.3.7)

Timeline and source

Published on 12 November 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
github.com
github.com
symfony.com

Same weakness in other software

These advisories are the same class of weakness (CWE-647: Use of Non-Canonical URL Paths for Authorization Decisions) in other software:

CVE-2025-64500 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE CWE-647
Public Exploit ✅ No
Source NVD
Published 2025-11-12
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
httpfoundation 7.0.0 7.3.7
symfony 7.0.0 7.3.7
symfony/http-foundation 7.0.0 7.3.7
symfony/symfony 7.0.0 7.3.7

Site Security Check

Is httpfoundation part of your stack?

CVE-2025-64500 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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