CVE-2015-9284

Name: CVE-2015-9284
Creator: NVD / NIST
Published: 2019-04-26T15:29:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.57%

Last modified Jun 17, 2026

CVE-2015-9284 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The request phase of the OmniAuth Ruby gem (1.9.1 and earlier) is vulnerable to Cross-Site Request Forgery when used as part of the Ruby on Rails framework, allowing accounts to be connected without user intent, user interaction, or feedback to the user. This permits a secondary account to be able to sign into the web application as the primary account.. EPSS estimates a 1.57% chance of exploitation in the next 30 days.

Description

The request phase of the OmniAuth Ruby gem (1.9.1 and earlier) is vulnerable to Cross-Site Request Forgery when used as part of the Ruby on Rails framework, allowing accounts to be connected without user intent, user interaction, or feedback to the user. This permits a secondary account to be able to sign into the web application as the primary account.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.57%

72.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Omniauth	Omniauth	< 2.0.0

References

https://github.com/omniauth/omniauth-rails/pull/1Third Party Advisory
https://github.com/omniauth/omniauth/pull/809Patch, Third Party Advisory
https://github.com/omniauth/omniauth/wiki/Resolving-CVE-2015-9284Mitigation, Third Party Advisory
https://www.openwall.com/lists/oss-security/2015/05/26/11Mailing List, Patch, Third Party Advisory
https://github.com/omniauth/omniauth-rails/pull/1Third Party Advisory
https://github.com/omniauth/omniauth/pull/809Patch, Third Party Advisory
https://github.com/omniauth/omniauth/wiki/Resolving-CVE-2015-9284Mitigation, Third Party Advisory
https://www.openwall.com/lists/oss-security/2015/05/26/11Mailing List, Patch, Third Party Advisory

Timeline

Published: Apr 26, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-9284?

How severe is CVE-2015-9284?

CVE-2015-9284 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.57% probability of exploitation in the next 30 days.

How do I fix CVE-2015-9284?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-9284?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST