CVE-2026-4986: Unknown Wpforms

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The WPForms WordPress plugin before 1.10.0.5 does not verify the authenticity of incoming PayPal webhook events before processing them, allowing unauthenticated attackers to forge webhook payloads and manipulate the payment state of arbitrary transactions.

Affected products

• Unknown Wpforms: from 1.10.0.1, before 1.10.0.5 (fixed in 1.10.0.5)

Published 2026-06-09. Last modified 2026-07-23.