Description
WordPress Plugin Member Approval is prone to a cross-site request forgery vulnerability. Exploiting this issue may allow a remote attacker to perform certain administrative actions and gain unauthorized access to the affected application; other attacks are also possible. WordPress Plugin Member Approval version 131109 is vulnerable; other versions may also be affected.
Remediation
Edit the source code to ensure that CSRF protection is implemented with Nonce-like mechanism
References
https://security.dxw.com/advisories/csrf-in-member-approval-131109-permits-unapproved-registrations/