CVE-2011-3186
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.
Does this matter?
Lower severity and a low EPSS score (1.75%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 1.75% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- rubyonrails/rails
- Source
- secalert@redhat.com
EPSS 1.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://groups.google.com/group/rubyonrails-security/msg/bbe342e43abaa78c?dmode=source&output=gplainPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html
- http://secunia.com/advisories/45921
- http://www.debian.org/security/2011/dsa-2301
- http://www.openwall.com/lists/oss-security/2011/08/17/1Patch
- http://www.openwall.com/lists/oss-security/2011/08/19/11Patch
- http://www.openwall.com/lists/oss-security/2011/08/20/1Patch
- http://www.openwall.com/lists/oss-security/2011/08/22/13Patch
- http://www.openwall.com/lists/oss-security/2011/08/22/14
- http://www.openwall.com/lists/oss-security/2011/08/22/5Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=732156Patch
- https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9Patch
- http://groups.google.com/group/rubyonrails-security/msg/bbe342e43abaa78c?dmode=source&output=gplainPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html
- http://secunia.com/advisories/45921
- http://www.debian.org/security/2011/dsa-2301
- http://www.openwall.com/lists/oss-security/2011/08/17/1Patch
- http://www.openwall.com/lists/oss-security/2011/08/19/11Patch
- http://www.openwall.com/lists/oss-security/2011/08/20/1Patch
- http://www.openwall.com/lists/oss-security/2011/08/22/13Patch
- http://www.openwall.com/lists/oss-security/2011/08/22/14
- http://www.openwall.com/lists/oss-security/2011/08/22/5Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=732156Patch
- https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.