CVE-2026-8853

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.

• CWE-79

• https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/classes/controllers/class.contact-data.php#L134
• https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.0/templates/contact-data/detail.php#L77
• https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.3/classes/controllers/class.contact-data.php#L134
• https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.3/templates/contact-data/detail.php#L77
• https://plugins.trac.wordpress.org/changeset?old_path=mw-wp-form/tags/5.1.3&new_path=mw-wp-form/tags/5.1.4
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2a6dfdec-c1c6-4300-ab0a-9fd1c550d09f?source=cve

Published

Jun 10, 2026

Last Modified

Jul 23, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-8846The Tuxquote plugin for WordPress is vulnerable to Stored Cr…6.4
• CVE-2026-8847The Dideo plugin for WordPress is vulnerable to Stored Cross…6.4
• CVE-2026-8848The Popup Maker – Boost Sales, Conversions, Optins, Subscrib…7.2
• CVE-2026-8850IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…7.5
• CVE-2026-8851SOGo versions 5.12.7 and prior contains a SQL injection vuln…8.6
• CVE-2026-8852IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…7.5
• CVE-2026-8854IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…7.5
• CVE-2026-8855IBM HTTP Server 8.5, and 9.0 is vulnerable to remote code ex…9.8
• CVE-2026-8856IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of serv…9.1
• CVE-2026-8857A vulnerability in Wikimedia Foundation timeline. This vul…8.8
• CVE-2026-8858IBM WebSphere Application Server and IBM WebSphere Applicati…8.8
• CVE-2026-8859IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow a…9.9