CVE-2026-13143 — MEDIUM (5.3)

Vulnerability 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.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-290

References

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

FAQ

What is CVE-2026-13143?

CVE-2026-13143 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 attack...

How severe is CVE-2026-13143?

CVE-2026-13143 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13143?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.