CVE-2026-4091: Faridsaniee Open-Brain

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

The OPEN-BRAIN plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5.0. This is due to missing nonce verification on the settings form in the func_page_main() function. This makes it possible for unauthenticated attackers to inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

• Faridsaniee Open-Brain: up to and including 0.5.0

Published 2026-04-15. Last modified 2026-06-17.