Vulnerability in MW WP Form — CVE-2026-92086
MediumSeverity
—Estimated exploit probability
200,000+ sitesInstalls
5.1.8Fixed in
What to do now
Update MW WP Form to 5.1.8 or later.
Affected versions
- Everything up to and including 5.1.7
Affected: MW WP Form (plugin, mw-wp-form)
What the vulnerability is
The MW WP Form plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.1.7 via the 'post_id' parameter. This makes it possible for unauthenticated attackers to extract personally identifiable information from other users' form inquiry records, including submitted names, email addresses, and free-text message bodies, by enumerating sequential post IDs. Exploitation requires the targeted form to have the querystring setting enabled, but this is a standard documented feature of the plugin.
Sources
- https://github.com/web-soudan/mw-wp-form/compare/5.1.6...5.1.8
- https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.parser.php#L156
- https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.parser.php#L165
- https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.parser.php#L208
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7e412f8a-f872-47cf-bbce-554b3559ef8a?source=cve