CRLF injection vulnerability in actionpack/lib/action_controller/response.rb in Ruby on Rails 2.3.x before 2.3.13 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the Content-Type header
Published Aug 29, 2011
4.3
MEDIUMCVSS 2.0
EPSS 1.75%
Description
CRLF injection vulnerability in actionpack/lib/action_controller/response.rb in Ruby on Rails 2.3.x before 2.3.13 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the Content-Type header.
Affected products
No data.
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.9
- 2.3.10
- 2.3.11
- 2.3.12
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:M/Au:N/C:N/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.75% (0.01748) | 77.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.75% (0.01748) | 74.82th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.81% (0.00814) | 72.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.96% (0.01956) | 72.58th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.81% (0.00814) | 72.61th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.67% (0.00666) | 80.40th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.67% (0.00666) | 79.06th | v3 (v2023.03.01) |
| Mar 29, 2023 | 0.67% (0.00666) | 76.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.94% (0.00943) | 80.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.96% (0.01955) | 78.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.96% (0.01955) | 76.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.96% (0.01955) | 55.71th | v2 (v2022.01.01) |
References (17)
- http://groups.google.com/group/rubyonrails-security/msg/bbe342e43abaa78c?dmode=source&output=gplain mailing-listx_refsource_MLISTPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/45921 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2301 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2011/08/17/1 mailing-listx_refsource_MLISTPatch
- http://www.openwall.com/lists/oss-security/2011/08/19/11 mailing-listx_refsource_MLISTPatch
- http://www.openwall.com/lists/oss-security/2011/08/20/1 mailing-listx_refsource_MLISTPatch
- http://www.openwall.com/lists/oss-security/2011/08/22/13 mailing-listx_refsource_MLISTPatch
- http://www.openwall.com/lists/oss-security/2011/08/22/14 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/08/22/5 mailing-listx_refsource_MLISTPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=732156 x_refsource_CONFIRMPatch
- https://github.com/advisories/GHSA-fcqf-h4h4-695m Advisory
- https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9 x_refsource_CONFIRMPatch
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2011-3186.yml
- https://groups.google.com/forum/#!topic/rubyonrails-security/b_yTveAph2g
- https://nvd.nist.gov/vuln/detail/CVE-2011-3186
- https://web.archive.org/web/20150201000000*/http://secunia.com/advisories/45921
Change history (0)
No recorded changes yet.