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
Published Dec 27, 2012
6.4
MEDIUMCVSS 2.0
EPSS 1.88%
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.
Affected products
No data.
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.0.10
- 2.0.11
- 2.0.12
- 2.0.13
- 2.0.14
- 2.0.15
- 2.0.16
- 2.0.17
- 2.0.18
- 2.0.19
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.88% (0.01876) | 78.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.88% (0.01876) | 76.61th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00178) | 37.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00256) | 65.88th | v3 (v2023.03.01) |
| May 10, 2024 | 0.19% (0.00195) | 56.78th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.18% (0.00183) | 54.97th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.15% (0.00155) | 50.78th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.14% (0.00142) | 48.65th | v3 (v2023.03.01) |
| Nov 17, 2023 | 0.26% (0.00256) | 63.30th | v3 (v2023.03.01) |
| Jul 15, 2023 | 0.26% (0.00263) | 62.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00296) | 64.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
References (10)
- http://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released x_refsource_CONFIRMVendor Advisory
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2012-6431.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/routing/CVE-2012-6431.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security/CVE-2012-6431.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2012-6431.yaml
- https://github.com/advisories/GHSA-83c3-qx27-2rwr Advisory
- https://github.com/symfony/symfony/commit/55014a6841bec50046e8329a4835c160ac31a496
- https://github.com/symfony/symfony/commit/8b2c17f80377582287a78e0b521497e039dd6b0d
- https://nvd.nist.gov/vuln/detail/CVE-2012-6431
- https://symfony.com/blog/security-release-symfony-2-0-20-and-2-1-5-released
Change history (0)
No recorded changes yet.