CVE-2026-5459 wedevs CVE debrief

Who should care

Users of the User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress, particularly those with paid subscriptions, should be aware of this vulnerability and take steps to protect their sites. This includes updating the plugin to the latest version, verifying and monitoring user subscriptions, and implementing additional security measures to prevent unauthorized access.

Technical summary

The vulnerability exists in the payment_page() function of the User Frontend plugin, where the 'user_id' parameter is not properly validated, allowing unauthenticated attackers to manipulate user subscriptions. 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. The plugin is vulnerable in all versions up to, and including, 4.3.1. The technical impact is a loss of paid features for users with existing paid subscriptions.

Defensive priority

Medium

Recommended defensive actions

• Update the User Frontend plugin to the latest version
• Verify and monitor user subscriptions for any suspicious activity
• Implement additional security measures to prevent unauthorized access
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-08T13:16:56.887Z and has not been modified since then. The NVD entry is currently Deferred. There is limited evidence available to confirm affected scope and severity. Defenders should verify the official CVE record and NVD entry for the latest information. The vulnerability exists in the payment_page() function of the User Frontend plugin, where the 'user_id' parameter is not properly validated, allowing unauthenticated attackers to manipulate user subscriptions. Evidence limits prevent further confirmation of exploitation or specific attack vectors.

Official resources