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CVE-2015-9284

26
FAUCET Score

CVE-2015-9284 describes a Cross-Site Request Forgery (CSRF) vulnerability in the OmniAuth Ruby gem (versions 1.9.1 and earlier), specifically when integrated with Ruby on Rails. This flaw allows an attacker to link a secondary account to a primary user's account without their knowledge or interaction, enabling unauthorized access to the primary account. Rated 8.8 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), it has a low attack complexity but a high potential impact on 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
< 2.0.0CPE matchmatch criteria
cpe:2.3:a:omniauth:omniauth:*:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0157 is in the 72nd percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: omniauthFixed in: 2.0.0
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: cfme-gemset

Vendor Advisories (2)

rubygemsGHSA-ww4x-rwq6-qpgfhigh

OmniAuth Ruby gem Cross-site Request Forgery in request phase

May 29, 2019
redhatCVE-2015-9284Important

rubygem-omniauth: request phase of the OmniAuth Ruby gem is vulnerable to Cross-Site Request Forgery leading to connection without user intent

May 27, 2015

References

github.com / omniauth/omniauth/pull/809
PatchThird Party Advisory
github.com / omniauth/omniauth-rails/pull/1
Third Party Advisory
github.com / omniauth/omniauth/wiki/Resolving-CVE-2015-9284
MitigationThird Party Advisory
openwall.com / lists/oss-security/2015/05/26/11
Mailing ListPatchThird Party Advisory