{"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 \u2013 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 \u2013 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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-18100", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T18:12:43.152431Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-25T18:12:48.650Z"}}], "cna": {"title": "MetForm <= 4.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'mf_form_id' Widget Setting", "credits": [{"lang": "en", "type": "finder", "value": "Jonah Burgess (CryptoCat)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 6.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "roxnor", "product": "MetForm \u2013 Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder for Elementor", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "4.1.8"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-07-28T17:45:54.000Z", "value": "Vendor Notified"}, {"lang": "en", "time": "2026-08-24T19:12:51.000Z", "value": "Disclosed"}], "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"}], "descriptions": [{"lang": "en", "value": "The MetForm \u2013 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-08-25T07:39:50.408Z"}}}, "cveMetadata": {"cveId": "CVE-2026-18100", "state": "PUBLISHED", "dateUpdated": "2026-08-25T18:12:52.098Z", "dateReserved": "2026-07-28T17:29:53.289Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2026-08-25T07:39:50.408Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "MetForm \u2013 Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder for Elementor", "vendor": "roxnor", "versions": [{"lessThanOrEqual": "4.1.8", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The MetForm \u2013 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."}], "id": "CVE-2026-18100", "lastModified": "2026-08-26T16:19:05.917", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18100", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-25T18:12:43.152431Z", "version": "2.0.3"}}]}, "published": "2026-08-25T08:18:08.360", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/controls/form-picker-utils.php#L45"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/utils/util.php#L605"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.4/widgets/form.php#L143"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/controls/form-picker-utils.php#L45"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/utils/util.php#L605"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/metform/tags/4.1.8/widgets/form.php#L143"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?reponame=&new=3639278%40metform%2Ftrunk&old=3618333%40metform%2Ftrunk"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/976f1f01-ad5d-413e-a208-ae4b71a61502?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}