CVE-2026-13143

WP Travel < 11.8.1 - Unauthenticated Payment Bypass via Forged PayPal IPN

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.

Affected

WP Travel

CVSS v3.1 CNA

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.30% chance of exploitation in the next 30 days, 22nd percentile

Published

2026-07-30

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/21bc82e3-4568-4e01-8704-88a242743402/

References

• CVE Record
• NVD entry