The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.

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History

Wed, 10 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 10 Jun 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Web-soudan
Web-soudan mw Wp Form
Wordpress
Wordpress wordpress
Vendors & Products Web-soudan
Web-soudan mw Wp Form
Wordpress
Wordpress wordpress

Wed, 10 Jun 2026 08:15:00 +0000

Type Values Removed Values Added
Description The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.
Title MW WP Form <= 5.1.3 - Authenticated (Editor+) Stored Cross-Site Scripting via 'memo' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-06-10T12:56:19.273Z

Reserved: 2026-05-18T16:14:39.011Z

Link: CVE-2026-8853

cve-icon Vulnrichment

Updated: 2026-06-10T12:56:14.343Z

cve-icon NVD

Status : Received

Published: 2026-06-10T08:16:25.807

Modified: 2026-06-10T08:16:25.807

Link: CVE-2026-8853

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T10:00:14Z

Weaknesses