Description
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.
References8
- plugins.trac.wordpress.org/browser/metform/tags/4.1.4/controls/…
- plugins.trac.wordpress.org/browser/metform/tags/4.1.4/utils/uti…
- plugins.trac.wordpress.org/browser/metform/tags/4.1.4/widgets/f…
- plugins.trac.wordpress.org/browser/metform/tags/4.1.8/controls/…
- plugins.trac.wordpress.org/browser/metform/tags/4.1.8/utils/uti…
- plugins.trac.wordpress.org/browser/metform/tags/4.1.8/widgets/f…
- plugins.trac.wordpress.org/changeset?reponame=&new=3639278%40me…
- www.wordfence.com/threat-intel/vulnerabilities/id/976f1f01-ad5d…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 33 · as of 9 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.