critical9.1
CVE-2026-11964
The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before act…
Impact
The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without completing a real payment.
Affected products
| Product | Affected versions |
|---|---|
| User Registration & Membership WordPress Plugin | before 5.2.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.