CVE-2026-92086: MW WP Form <= 5.1.7 - Unauthenticated Sensitive Information Exposure in 'post_id' Parameter
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 'postid' 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.
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed to unauthenticated access to inquiry data?
MW WP Form installations running version 5.1.7 or earlier are affected when the targeted form has its querystring setting enabled. That setting is a standard documented plugin feature.
What does an attacker need to exploit the issue?
No authentication or user interaction is required. An attacker can enumerate sequential post IDs through the post_id parameter to retrieve records from affected forms.
What information could be disclosed?
Exposed inquiry records can contain personally identifiable information, including submitted names, email addresses, and free-text message bodies.