WP User Frontend – Registration, User Profile, Membership, Content Restriction, User Directory, and Frontend Post Submiss, CVE-2026-5459

CVE, Research URL: CVE-2026-5459
Home page URL: Security reports for WP User Frontend – Registration, User Profile, Membership, Content Restriction, User Directory, and Frontend Post Submiss
Application: WP User Frontend – Registration, User Profile, Membership, Content Restriction, User Directory, and Frontend Post Submiss
Published on: Jul 08, 2026
Research Description: The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.3.1 via the payment_page() function due to missing validation on the 'user_id' user controlled key. This makes it possible for unauthenticated attackers to activate a free subscription pack for any user on the site, overwriting their existing paid subscription and causing loss of paid features.
Affected versions: max 4.3.2.
Status: vulnerable

WP User Frontend &#8211; Registration, User Profile, Membership, Content Restriction, User Directory, and Frontend Post Submiss, CVE-2026-5459