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CVE-2011-0449

24
FAUCET Score

CVE-2011-0449 describes a vulnerability in Ruby on Rails 3.0.x before 3.0.4, specifically within the actionpack/lib/action_view/template/resolver.rb component. This flaw allows remote attackers to bypass access restrictions on case-insensitive filesystems by manipulating the case of action names in template requests. With a CVSS score of 7.5, it is considered highly severe, enabling potential compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.0.0:*:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.0.0:beta:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.0.0:beta2:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.0.0:beta3:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:3.0.0:beta4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.50%
Probability of exploitation in next 30 days
EPSS Percentile
83.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0250 is in the 70th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rubygemspatch availablevia ghsa
Product: actionpackFixed in: 3.0.4

Vendor Advisories (1)

rubygemsGHSA-4ww3-3rxj-8v6qhigh

actionpack allows remote attackers to bypass intended access restrictions

Oct 24, 2017

References

groups.google.com / group/rubyonrails-security/msg/04345b2e84df5b4f
lists.fedoraproject.org / pipermail/package-announce/2011-April/057650.html
secunia.com / advisories/43278
Vendor Advisory
securitytracker.com / id
weblog.rubyonrails.org / 2011/2/8/new-releases-2-3-11-and-3-0-4
Patch
vupen.com / english/advisories/2011/0877