WCFM Membership vulnerabilities

The WCFM Membership plugin for WordPress is vulnerable to Insecure Direct Object Reference (IDOR) in versions up to and including 2.11.10. The 'wcfmvm_membership_change' AJAX action fails to validate user permissions to modify other users, allowing authenticated attackers with vendor-level access or higher to change any user's role to 'wcfm_vendor' by altering their membership plan.

CVE-2026-42753 describes a missing authorization vulnerability in the WC Lovers WCFM Membership plugin, allowing exploitation of incorrectly configured access control security levels. This issue affects WCFM Membership from n/a through version 2.11.10.

Missing Authorization vulnerability in WCFM Membership by WC Lovers allows exploiting incorrectly configured access control security levels. Affects versions through 2.11.11.

Subscriber Privilege Escalation in WCFM Membership versions up to 2.11.11. A user with subscriber role can gain higher privileges.