CVE-2026-13143 WP Travel < 11.8.1 - Unauthenticated Payment Bypass via Forged PayPal IPN
Unauthenticated attackers can forge PayPal IPN notifications to mark bookings as paid, bypassing payment verification in WP Travel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13143?
CVE-2026-13143 is a medium-severity vulnerability in Unknown WP Travel, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-290
Which versions are affected by CVE-2026-13143?
How do I fix CVE-2026-13143?
No fix has been published for CVE-2026-13143 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-13143 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13143 exists.
Sources
Also known as GHSA-vx7q-rhxw-6x3x.