CVE-2026-7792: WPForms <= 1.10.0.4 - Unauthenticated Insufficient Verification of Data Authenticity via PayPal Commerce Webhook Endpoint

Vulnerability summary

CVE-2026-7792 is a medium (CVSS 5.3) vulnerability in smub wpforms – easy form builder for wordpress – contact forms, payment forms, surveys, & more. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21% of scored vulnerabilities.

Timeline

1. 06-06-2026
   PublishedVulnerability first disclosed.
2. 06-06-2026
   Last modifiedVulnerability information updated.

Description

The WPForms – Easy Form Builder for WordPress – Contact Forms, Payment Forms, Surveys, & More plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in versions up to and including 1.10.0.1. This is due to the PayPal Commerce webhook endpoint processing unauthenticated JSON webhook payloads without verifying that the request originated from PayPal using the required HMAC-SHA256 webhook signature, and only checking whether the supplied event_type is whitelisted before dispatching the attacker-controlled resource data to handlers that update payment records. This makes it possible for unauthenticated attackers who know a valid PayPal subscription_id to forge PayPal webhook events and modify subscription payment records, such as reactivating a cancelled or suspended subscription by setting its subscription_status to active.

• CWE-345Insufficient Verification of Data AuthenticityThe product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.