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Fencer Intel
medium 6.8

CVE-2012-6134 json

omniauth-oauth2 Cross-Site Request Forgery vulnerability

published 2013-04-09 13 y ago modified 2026-06-16 4 mo ago also GHSA-fgmx-8h93-26fh , EUVD-2017-0228

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Cross-site request forgery (CSRF) vulnerability in the omniauth-oauth2 gem 1.1.1 and earlier for Ruby allows remote attackers to hijack the authentication of users for requests that modify session state.

Patch / fix

  • rubygems omniauth-oauth2 1.1.1
  • omniauth-oauth2_project omniauth-oauth2 1.1.1

Exploit prediction

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected packages

ecosystem package affected fixed in
rubygems omniauth-oauth2
<1.1.1
1.1.1

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.