The WP Travel WordPress plugin before 11.8.1 does not verify PayPal Instant Payment Notifications through the PayPal post-back handshake before marking a booking paid, allowing unauthenticated attackers to forge a notification that flips an arbitrary pending booking to a paid and booked state at an attacker-chosen amount.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Wp Travel Plugin | — | Update wp-travel plugin to version 11.8.1, or a newer patched version | Aug 17, 2026 | Aug 4, 2026 |
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