{"id":"CVE-2026-4091","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4091","generatedAt":"2026-10-28T02:10:20.238Z","title":"The OPEN-BRAIN plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5.0.","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":"2026-04-15T09:16:33.000Z","lastModified":"2026-06-17T10:55:59.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-352"],"affected":[],"epss":{"score":0.00211,"percentile":0.11323,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L237","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L237","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/93df6480-9bb1-4f5d-bb39-ff1a01d739cf?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4091","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}