Unauthorized Payment Notification Processing in WP Travel Plugin by WordPress
CVE-2026-13143
5.3MEDIUM
Key Information:
Badges
👾 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.
References
CVSS V3.1
Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved
Credit
Revanth Hari Narayana Matte
WPScan