{"id":"CVE-2023-2528","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-2528","generatedAt":"2026-10-27T18:48:36.445Z","title":"The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.24.","description":"The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.24. This is due to missing or incorrect nonce validation on the AJAX action handler. This makes it possible for unauthenticated attackers to execute AJAX actions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.","published":"2023-05-17T00:15:09.000Z","lastModified":"2026-06-17T05:52:47.000Z","status":"Modified","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-352"],"affected":["supsystic/contact form"],"epss":{"score":0.0032,"percentile":0.24814,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2777737#L297","tags":["Issue Tracking"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2912584#L230","tags":["Issue Tracking"],"source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1c387b07-baf6-4c62-943e-4bd121160ceb?source=cve","tags":["Third Party Advisory"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2777737#L297","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/browser/contact-form-by-supsystic/trunk/classes/frame.php?rev=2912584#L230","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1c387b07-baf6-4c62-943e-4bd121160ceb?source=cve","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-2528","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."}