WP Travel < 11.8.1 - Unauthenticated Payment Bypass via Forged PayPal IPN

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-13143
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-30 06:24:58 UTC
Updated2026-07-30 16:45:00 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from ADP

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

EPSS: 0.002210000 probability, percentile 0.127660000 (date 2026-08-01)

Problem Types: CWE-290 | CWE-290 Authentication Bypass by Spoofing | CWE-290 CWE-290 Authentication Bypass by Spoofing

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown WP Travel affected 11.8.1 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/21bc82e3-4568-4e01-8704-88a242743402 [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Revanth Hari Narayana Matte (en)

CNA: WPScan (en)

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