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CVE-2013-1812

14
FAUCET Score

CVE-2013-1812 describes a denial-of-service vulnerability in the ruby-openid gem (versions prior to 2.2.2), affecting products like Fedora and Janrain. Remote OpenID providers can trigger high CPU consumption through large XRDS documents or XML Entity Expansion (XEE) attacks. This vulnerability has a CVSS score of 4.3 (medium severity), indicating a network-based attack with medium complexity and potential for partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
17CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:17:*:*:*:*:*:*:*
18CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*
<= 2.2.1CPE matchmatch criteria
cpe:2.3:a:janrain:ruby-openid:*:-:-:*:-:ruby:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:janrain:ruby-openid:2.2.0:-:-:*:-:ruby:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 67th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: ruby-openidFixed in: 2.2.2

Vendor Advisories (1)

rubygemsGHSA-6c8p-qphv-668vmedium

Denial of service in ruby-openid

Oct 24, 2017

References

lists.fedoraproject.org / pipermail/package-announce/2013-November/120204.html
lists.fedoraproject.org / pipermail/package-announce/2013-November/120361.html
bugzilla.redhat.com / show_bug.cgi
github.com / openid/ruby-openid/blob/master/CHANGELOG.md
github.com / openid/ruby-openid/commit/a3693cef06049563f5b4e4824f4d3211288508ed
ExploitPatch
github.com / openid/ruby-openid/pull/43
openwall.com / lists/oss-security/2013/03/03/8
Patch