Medium severity6.1NVD Advisory· Published Apr 15, 2026· Updated Apr 22, 2026
CVE-2026-4091
CVE-2026-4091
Description
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
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
9- plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/trunk/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/trunk/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/trunk/index.phpnvd
- plugins.trac.wordpress.org/browser/open-brain/trunk/index.phpnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/93df6480-9bb1-4f5d-bb39-ff1a01d739cfnvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (April 13, 2026 to April 19, 2026)Wordfence Blog · Apr 23, 2026