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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.

PUBLISHED Reserved 2026-03-12 | Published 2026-04-15 | Updated 2026-04-15 | Assigner Wordfence




MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

Any version
affected

Timeline

2026-04-14:Disclosed

Credits

Muhammad Nur Ibnu Hubab finder

References

www.wordfence.com/...-9bb1-4f5d-bb39-ff1a01d739cf?source=cve

plugins.trac.wordpress.org/...ser/open-brain/trunk/index.php

plugins.trac.wordpress.org/...pen-brain/tags/0.5.0/index.php

plugins.trac.wordpress.org/...ser/open-brain/trunk/index.php

plugins.trac.wordpress.org/...pen-brain/tags/0.5.0/index.php

plugins.trac.wordpress.org/...ser/open-brain/trunk/index.php

plugins.trac.wordpress.org/...pen-brain/tags/0.5.0/index.php

plugins.trac.wordpress.org/...ser/open-brain/trunk/index.php

plugins.trac.wordpress.org/...pen-brain/tags/0.5.0/index.php

cve.org (CVE-2026-4091)

nvd.nist.gov (CVE-2026-4091)

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