{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-10-02T00:23:18.545","vulnerabilities":[{"cve":{"id":"CVE-2021-4404","sourceIdentifier":"security@wordfence.com","published":"2023-07-01T06:15:10.297","lastModified":"2026-06-17T04:19:41.303","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The Event Espresso 4 Decaf plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.10.11. This is due to missing or incorrect nonce validation on the ajaxHandler() function. This makes it possible for unauthenticated attackers to op into notifications via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."},{"lang":"es","value":"El plugin Event Espresso 4 Decaf para WordPress es vulnerable a ataques de tipo Cross-Site Request Forgery (CSRF) en versiones hasta la 4.10.11 inclusive. Esto es debido a la falta o incorrecta validación nonce en la función \"ajaxHandler()\". Esto hace posible que los atacantes no autenticados puedan entrar en las notificaciones a través de una solicitud manipulada concedida y puedan engañar a un administrador del sitio para realizar una acción como hacer clic en un enlace. "}],"affected":[{"source":"security@wordfence.com","affectedData":[{"vendor":"eventespresso","product":"Event Espresso – Event Registration & Ticketing Sales","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"4.10.11","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@wordfence.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2024-10-25T13:05:16.658828Z","id":"CVE-2021-4404","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security@wordfence.com","type":"Secondary","description":[{"lang":"en","value":"CWE-352"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:eventespresso:event_espresso_4_decaf:*:*:*:*:*:wordpress:*:*","versionEndIncluding":"4.10.11","matchCriteriaId":"653CCF07-0971-4E8C-A798-72A31DBE8C08"}]}]}],"references":[{"url":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/","source":"security@wordfence.com","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/","source":"security@wordfence.com","tags":["Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset/2554360/event-espresso-decaf/trunk/core/domain/services/pue/Stats.php","source":"security@wordfence.com","tags":["Patch"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/89d3a9da-2496-4f75-ad8f-65629f198fe5?source=cve","source":"security@wordfence.com","tags":["Third Party Advisory"]},{"url":"https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Not Applicable"]},{"url":"https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset/2554360/event-espresso-decaf/trunk/core/domain/services/pue/Stats.php","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/89d3a9da-2496-4f75-ad8f-65629f198fe5?source=cve","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}