{"id":"CVE-2026-4091","state":"PUBLISHED","title":"OPEN-BRAIN <= 0.5.0 - Cross-Site Request Forgery","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.","publishedAt":"2026-04-15T08:28:15.602Z","updatedAt":"2026-04-15T15:48:59.579Z","severity":{"score":6.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["faridsaniee OPEN-BRAIN"],"affected":[{"vendor":"faridsaniee","product":"OPEN-BRAIN","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.5.0","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/93df6480-9bb1-4f5d-bb39-ff1a01d739cf?source=cve","https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272","https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272","https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252","https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252","https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253","https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253","https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L237","https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L237"],"weaknesses":["CWE-352"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4091.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4091","state":"PUBLISHED","datePublished":"2026-04-15T08:28:15.602Z","dateUpdated":"2026-04-15T15:48:59.579Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-03-12T21:16:13.890Z"},"containers":{"cna":{"title":"OPEN-BRAIN <= 0.5.0 - Cross-Site Request Forgery","descriptions":[{"lang":"en","value":"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":[{"vendor":"faridsaniee","product":"OPEN-BRAIN","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.5.0","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/93df6480-9bb1-4f5d-bb39-ff1a01d739cf?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L237"},{"url":"https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L237"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-352","lang":"en","description":"CWE-352 Cross-Site Request Forgery (CSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-04-15T08:28:15.602Z"},"credits":[{"lang":"en","type":"finder","value":"Muhammad Nur Ibnu Hubab"}],"timeline":[{"time":"2026-04-14T19:46:41.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-15T15:48:50.884671Z","id":"CVE-2026-4091","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-15T15:48:59.579Z"}}]}}}