{"id":"CVE-2026-91152","state":"PUBLISHED","title":"Everest Forms <= 3.6.2 - Reflected Cross-Site Scripting via 'evf_toast_type' Parameter","description":"The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'evf_toast_type' parameter in all versions up to, and including, 3.6.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires the sibling evf_toast parameter to decode successfully via atob(), but this is a trivially attacker-controlled prerequisite.","publishedAt":"2026-10-29T09:25:34.908Z","updatedAt":"2026-10-29T10:45:41.225Z","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":["wpeverest Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI"],"affected":[{"vendor":"wpeverest","product":"Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.6.2","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/8a017198-daf1-4779-a101-dc539e263e50?source=cve","https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L22","https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L91","https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/admin/class-evf-admin-assets.php#L376","https://plugins.trac.wordpress.org/changeset/3704878/everest-forms/trunk/assets/js/admin/admin.js"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91152.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91152","state":"PUBLISHED","datePublished":"2026-10-29T09:25:34.908Z","dateUpdated":"2026-10-29T10:45:41.225Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-09-14T20:39:22.523Z"},"containers":{"cna":{"title":"Everest Forms <= 3.6.2 - Reflected Cross-Site Scripting via 'evf_toast_type' Parameter","descriptions":[{"lang":"en","value":"The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'evf_toast_type' parameter in all versions up to, and including, 3.6.2 due to insufficient input sanitization and output escaping. 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Exploitation requires the sibling evf_toast parameter to decode successfully via atob(), but this is a trivially attacker-controlled prerequisite."}],"affected":[{"vendor":"wpeverest","product":"Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.6.2","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/8a017198-daf1-4779-a101-dc539e263e50?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L22"},{"url":"https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/assets/js/admin/admin.js#L91"},{"url":"https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.6.1/includes/admin/class-evf-admin-assets.php#L376"},{"url":"https://plugins.trac.wordpress.org/changeset/3704878/everest-forms/trunk/assets/js/admin/admin.js"}],"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-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-10-29T09:25:34.908Z"},"credits":[{"lang":"en","type":"finder","value":"Yuto Hyakumoto"}],"timeline":[{"time":"2026-09-14T20:54:26.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-10-28T20:44:14.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-91152","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-29T10:32:08.899041Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T10:45:41.225Z"}}]}}}