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CVE-2026-4091

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published4/15/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-352

References

https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L237(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L237(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/93df6480-9bb1-4f5d-bb39-ff1a01d739cf?source=cve(security@wordfence.com)

IOC Correlations

No correlations recorded

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