Medium severity · published Jul 30, 2026
CVE-2026-13143
WP Travel < 11.8.1 - Unauthenticated Payment Bypass via Forged PayPal IPN
5.3
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WT
WP Travel ·
before 11.8.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13143
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13143
wpscan.com
https://wpscan.com/vulnerability/21bc82e3-4568-4e01-8704-88a242743402/
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