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.

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Fixes

Solution

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Workaround

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History

Fri, 28 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Roxnor
Roxnor metform – Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder For Elementor
Wordpress
Wordpress wordpress
Vendors & Products Roxnor
Roxnor metform – Contact Form, Survey, Quiz, Conditional Forms, Form Templates & Custom Form Builder For Elementor
Wordpress
Wordpress wordpress

Tue, 25 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 08:00:00 +0000

Type Values Removed Values Added
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.
Title MetForm <= 4.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'mf_form_id' Widget Setting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-25T18:12:52.098Z

Reserved: 2026-07-28T17:29:53.289Z

Link: CVE-2026-18100

cve-icon Vulnrichment

Updated: 2026-08-25T18:12:48.650Z

cve-icon NVD

Status : Deferred

Published: 2026-08-25T08:18:08.360

Modified: 2026-08-26T16:19:05.917

Link: CVE-2026-18100

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T20:38:05Z

Weaknesses