CVE-2026-84906: Unknown Eventin

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The Eventin WordPress plugin before 4.1.24 does not verify that a completed payment corresponds to the order it is applied to, confirming only that the payment gateway reports the transaction as successful, not its amount, currency, or which order it belongs to, allowing unauthenticated visitors to mark unpaid orders of any value as paid by replaying the transaction of a single genuine low-value payment.

Affected products

• Unknown Eventin: before 4.1.24 (fixed in 4.1.24)

Published 2026-09-16. Last modified 2026-09-16.