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CVE-2013-0333

88
FAUCET Score

CVE-2013-0333 is a critical vulnerability affecting Ruby on Rails versions 2.3.x before 2.3.16 and 3.0.x before 3.0.20. It stems from improper conversion of JSON to YAML data, allowing remote attackers to execute arbitrary code, perform SQL injection, or bypass authentication through crafted input. With a CVSS score of 7.5 and an EPSS score indicating high exploitability, this vulnerability presents a significant risk. Exploit modules are publicly available in Metasploit, and it has garnered community discussion and media coverage, though it is not currently listed on the KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
2.3.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.3.0:*:*:*:*:*:*:*
2.3.1CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.3.1:*:*:*:*:*:*:*
2.3.2CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.3.2:*:*:*:*:*:*:*
2.3.3CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.3.3:*:*:*:*:*:*:*
2.3.4CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.3.4:*:*:*:*:*:*:*

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
95.33%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: Ruby on Rails JSON Processor YAML Deserialization Code Execution · Jan 28, 2013
ExploitDB: EDB-24434 · Jan 29, 2013
This CVE's current EPSS score of 0.9533 is in the 100th percentile among its peer group of 51,455 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

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 (6)

redhatpatch availablevia redhat_api
Product: CloudForms for RHEL 6Fixed in: katello-0:1.1.12.1-1.el6cf
View patch
redhatpatch availablevia redhat_api
Product: CloudForms for RHEL 6Fixed in: rubygem-activesupport-1:3.0.10-9.el6cf
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Subscription Asset Manager 1.1Fixed in: rubygem-activesupport-1:3.0.10-7.el6cf
View patch
redhatpatch availablevia redhat_api
Product: RHEL 6 Version of OpenShift EnterpriseFixed in: rubygem-activesupport-1:3.0.13-4.el6op
View patch
rubygemspatch availablevia ghsa
Product: activesupportFixed in: 2.3.16
rubygemspatch availablevia ghsa
Product: activesupportFixed in: 3.0.20

Vendor Advisories (2)

rubygemsGHSA-xgr2-v94m-rc9ghigh

activesupport in Rails vulnerable to incorrect data conversion

Oct 24, 2017
redhatCVE-2013-0333Critical

rubygem-activesupport: json to yaml parsing

Jan 28, 2013

References

lists.apple.com / archives/security-announce/2013/Jun/msg00000.html
lists.apple.com / archives/security-announce/2013/Mar/msg00002.html
rhn.redhat.com / errata/RHSA-2013-0201.html
rhn.redhat.com / errata/RHSA-2013-0202.html
rhn.redhat.com / errata/RHSA-2013-0203.html
groups.google.com / group/rubyonrails-security/msg/52179af76915e518
Vendor Advisory
puppet.com / security/cve/cve-2013-0333
support.apple.com / kb/HT5784
weblog.rubyonrails.org / 2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released
debian.org / security/2013/dsa-2613
kb.cert.org / vuls/id/628463
US Government Resource