CVE-2026-18100

{"id": "CVE-2026-18100", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18100", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T18:12:43.152431Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"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"}]}], "published": "2026-08-25T08:18:08.360", "references": [{"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", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "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."}], "lastModified": "2026-08-26T16:19:05.917", "sourceIdentifier": "security@wordfence.com"}