{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18100","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","state":"PUBLISHED","assignerShortName":"Wordfence","dateReserved":"2026-07-28T17:29:53.289Z","datePublished":"2026-08-25T07:39:50.408Z","dateUpdated":"2026-08-25T18:12:52.098Z"},"containers":{"cna":{"providerMetadata":{"orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence","dateUpdated":"2026-08-25T07:39:50.408Z"},"affected":[{"vendor":"roxnor","product":"MetForm – Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder for Elementor","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.1.8","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"The MetForm – Contact Form, Survey, Quiz, & Custom Form Builder for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'mf_form_id' Widget Setting in all versions up to, and including, 4.1.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload bypasses Elementor's save-time wp_kses_post filter because it contains no HTML tags, and MetForm's own str_replace transformation of script tags into JavaScript template literal expressions provides an additional delivery path."}],"title":"MetForm <= 4.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'mf_form_id' Widget Setting","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/976f1f01-ad5d-413e-a208-ae4b71a61502?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/utils/util.php#L605"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/controls/form-picker-utils.php#L45"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/widgets/form.php#L143"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/utils/util.php#L605"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/controls/form-picker-utils.php#L45"},{"url":"https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/widgets/form.php#L143"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&new=3639278%40metform%2Ftrunk&old=3618333%40metform%2Ftrunk"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","cweId":"CWE-79","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM"}}],"credits":[{"lang":"en","type":"finder","value":"Jonah Burgess (CryptoCat)"}],"timeline":[{"time":"2026-07-28T17:45:54.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-08-24T19:12:51.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-25T18:12:43.152431Z","id":"CVE-2026-18100","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-25T18:12:52.098Z"}}]}}