What’s Vulnerable › Vulnerabilities
CVE-2026-84906: Eventin < 4.1.24 - Unauthenticated Payment Bypass via Stripe and PayPal Cross-Order Transaction Replay
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-09-16
- Weakness: CWE-345
Description
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
- Eventin: before 4.1.24 — fixed in 4.1.24
How to fix
Upgrade to a fixed version: Eventin 4.1.24. Check the vendor advisory for mitigations.
References
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