Unauthorized Payment Notification Processing in WP Travel Plugin by WordPress
CVE-2026-13143
Currently unrated
Key Information:
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👾 Exploit Exists🟡 Public PoC
What is CVE-2026-13143?
The WP Travel plugin for WordPress, prior to version 11.8.1, contains a vulnerability that allows unauthenticated attackers to manipulate payment statuses. This flaw stems from the plugin's failure to authenticate PayPal Instant Payment Notifications via the necessary post-back handshake. Consequently, attackers can forge notifications, enabling them to change the status of any arbitrary pending booking to paid, often for an amount they control.
Affected Version(s)
WP Travel 0 < 11.8.1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.