CVE-2026-12688 ProfileGrid < 5.9.9.7 - Unauthenticated Payment Bypass and Forced Group Membership via PayPal IPN Forgery

The ProfileGrid WordPress plugin before 5.9.9.7 does not verify PayPal IPN notifications before granting paid group membership, allowing unauthenticated attackers to forge a payment notification and mark any user as a paid member of any group without any payment being made...