CVE-2011-0449
actionpack allows remote attackers to bypass intended access restrictions
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
Exploit likelihood
What each source reports
NVD Score used
7.5
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
- Record
CVE-2011-0449- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
- Record
CVE-2011-0449- Updated
- 2026-11-02
EUVDEUVD-2017-0164 No score
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
- Record
EUVD-2017-0164- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4ww3-3rxj-8v6q No score
actionpack allows remote attackers to bypass intended access restrictions
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
- Record
GHSA-4ww3-3rxj-8v6q- Updated
- 2026-11-02
OSVGHSA-4ww3-3rxj-8v6q No score
actionpack allows remote attackers to bypass intended access restrictions
actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.4, when a case-insensitive filesystem is used, does not properly implement filters associated with the list of available templates, which allows remote attackers to bypass intended access restrictions via an action name that uses an unintended case for alphabetic characters.
- Record
GHSA-4ww3-3rxj-8v6q- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
actionpackRubyGems |
3.0.0 up to 3.0.4 | 3.0.4 |
actionpackRubyGems |
3.0.0 up to 3.0.4, plus listed versions 3.0.13.0.23.0.33.0.4.rc1 |
3.0.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-0449 is a high vulnerability (CVSS 7.5) in Rubyonrails Rails, published February 21, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.50%, the 84th percentile. Fixed in actionpack 3.0.4.
References
securitytracker.com/id?1025061
groups.google.com/group/rubyonrails-security/msg/04345b2e84df5b4f?dmode=source&output=gplain
weblog.rubyonrails.org/2011/2/8/new-releases-2-3-11-and-3-0-4
lists.fedoraproject.org/pipermail/package-announce/2011-April/057650.html
secunia.com/advisories/43278
vupen.com/english/advisories/2011/0877
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nvd.nist.gov/vuln/detail/CVE-2011-0449
github.com/rails/rails/commit/6f80224057803f85b3f448936aae89e742452c3b
github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2011-0449.yml
web.archive.org/web/20201207190612/http://securitytracker.com/id?1025061
github.com/advisories/GHSA-4ww3-3rxj-8v6q
github.com/rails/rails/tree/main/actionpack