What the vulnerability does
01Description
The New User Approve plugin for WordPress is vulnerable to unauthorized data disclosure in all versions up to, and including, 3.0.9 due to insufficient API key validation using loose equality comparison. This makes it possible for unauthenticated attackers to retrieve personally identifiable information (PII), including usernames and email addresses of users with various approval statuses via the Zapier REST API endpoints, by exploiting PHP type juggling with the api_key parameter set to "0" on sites where the Zapier API key has not been configured.
Explanation of Vulnerability in Simple Terms
02Summary
New User Approve versions 3.0.9 and earlier expose sensitive information that can be accessed over the network without authentication. An attacker can retrieve this data directly without needing user credentials or interaction. The exposure is limited to confidentiality; the vulnerability does not allow modification or deletion of data.
What an attacker can do
03Attacker Capabilities
Read sensitive information from the plugin without logging in.
Potential impact on your site
04Site Impact
Sensitive data stored by the plugin may be visible to unauthenticated visitors.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
November 19, 2025
CVE published
April 8, 2026
Record updated
