Cross-Site Request Forgery Vulnerability in OPEN-BRAIN Plugin for WordPress
CVE-2026-4091

6.1MEDIUM

Key Information:

Vendor

WordPress
Status
Open-brain
Vendor
CVE Published:
15 April 2026

What is CVE-2026-4091?

The OPEN-BRAIN plugin for WordPress is affected by a Cross-Site Request Forgery vulnerability that exists due to the absence of nonce verification in the settings form. This flaw allows unauthorized attackers to exploit it by tricking a site administrator into executing unintended actions, such as clicking on a link. As a result, attackers could potentially inject harmful scripts into the web application, posing a significant security risk to administrators and users alike.

Affected Version(s)

OPEN-BRAIN 0 <= 0.5.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/open-brain/tru...
https://plugins.trac.wordpress.org/browser/open-brain/tag...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammad Nur Ibnu Hubab
.