CVE-2011-3186
MEDIUM · CVSS 4.3EPSS 1.7%EU EUVD
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.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N- Weakness (CWE)
- CWE-94
- EPSS score
- 1.7% (78th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2017-0225)
- Published
- August 29, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2017-0225 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- rubyonrails / rails
- rubyonrails / rails
- rubyonrails / rails
- rubyonrails / rails
- rubyonrails / rails
- rubyonrails / rails
- rubyonrails / rails
References
- http://groups.google.com/group/rubyonrails-security/msg/bbe342e43abaa78c?dmode=source&output=gplain(Patch)
- 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/2011/08/17/1(Patch)
- http://www.openwall.com/lists/oss-security/2011/08/19/11(Patch)
- http://www.openwall.com/lists/oss-security/2011/08/20/1(Patch)
- http://www.openwall.com/lists/oss-security/2011/08/22/13(Patch)
- http://www.openwall.com/lists/oss-security/2011/08/22/14
- http://www.openwall.com/lists/oss-security/2011/08/22/5(Patch)
- https://bugzilla.redhat.com/show_bug.cgi?id=732156(Patch)
- https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9(Patch)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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