The RepairBuddy WordPress plugin suffers from a missing authorization vulnerability (CWE-862) in the wc_update_user_data AJAX action. This allows authenticated users with low privileges to update email addresses of other users without proper identity verification. Attackers can exploit this to change administrator email addresses, reset passwords, and escalate privileges by taking over accounts. The vulnerability affects all versions up to 3.8120. There is no vendor advisory or patch information available at this time.

Successful exploitation allows an authenticated attacker with subscriber-level access or higher to escalate privileges by changing arbitrary users' email addresses, including administrators. This enables password resets and full account takeover, compromising confidentiality, integrity, and availability of the affected WordPress site.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict plugin usage to trusted users only and consider disabling or removing the plugin if possible to prevent exploitation.