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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…
Medium6.4EPSS 1.9%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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 encoded string.
Timeline
ID reserved
By mitre
- 8 days later
· 8 days later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.4 | AV:N/AC:L/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistsymfony/http-foundationGHSA-83c3-qx27-2rwr (opens in a new tab)
- Packagistsymfony/routingGHSA-83c3-qx27-2rwr (opens in a new tab)
- Packagistsymfony/securityGHSA-83c3-qx27-2rwr (opens in a new tab)
- Packagistsymfony/symfonyGHSA-83c3-qx27-2rwr (opens in a new tab)
References (1)
- http://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-83c3-qx27-2rwr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-6431)Record last updated .