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CVE-2012-6431

Symfony 2.0.x before 2.0.20 does not process URL encoded data consistently within the Routing and Security components, which allows remote attackers to bypass intended URI restrictions via a doubly...

Published: Dec 27, 2012Updated: Apr 29, 2026 Sources: CVE List NVD GHSACWE-264
NVD MITRE
6.4CVSSMEDIUM
EPSS Score
1.9%
Top 23.3%
CISA KEV
Not in KEV
Exploits
4 Known
Remediation
Patch Available

Description

Symfony Allows URI Restrictions Bypass Via Double-Encoded String

CVSS Vector Breakdown

AV:NAC:LAu:NC:PI:PA:N
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Au:NAuthentication
None
Impact
C:PConfidentiality
Partial
I:PIntegrity
Partial
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-264

Affected Products

symfony/http-foundationPackagistOSS Libraries
symfony/routingPackagistOSS Libraries
symfony/securityPackagistOSS Libraries
symfony/symfonyPackagistOSS Libraries
symfonysensiolabs
LibraryLibrary
OSS Libraries / generic-library
packagistpackage-ecosystemOSS Libraries
sensiolabsoss-projectOSS Libraries
and 1 more affected products View all →

Exploitability

4 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

https://nvd.nist.gov/vuln/detail/CVE-2012-6431
nvd.nist.gov
https://github.com/symfony/symfony/commit/55014a6841bec50046e8329a4835c160ac31a496
github.com
https://github.com/symfony/symfony/commit/8b2c17f80377582287a78e0b521497e039dd6b0d
github.com
and 6 more references View all →

Timeline

Published
Dec 27, 2012
Last Updated
Apr 29, 2026

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