CVE-2015-9284: Omniauth

High severity, CVSS 8.8. EPSS: 1.5% chance of exploitation in the next 30 days.

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.

Affected products

• Omniauth Omniauth: before 2.0.0 (fixed in 2.0.0)

Published 2019-04-26. Last modified 2026-06-17.