CVE-2026-67398

State: Published
Severity: 8.2 High
Published: Sep 3, 2026
Updated: Sep 14, 2026
Reserved: Jul 29, 2026

Description

Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.7, from 9.0.0 before 9.0.8, all other EOL versions from 4.5.0. The vulnerability allows an unauthenticated user to get WHMCS customer's data via 2Checkout payment gateway's endpoint under specific conditions.

Scores

CVSS	Score	Vector	Source
4.0	8.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	hackerone

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
WHMCSWebPros	4.5.0 to before 8.12.2Affected 8.13.0 to before 8.13.7Affected 9.0.0 to before 9.0.8Affected

References

https://help.whmcs.com/m/125386/l/2116695-cve-2026-67398-whmcs-security-update-2026-09-03

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.