Description
Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.8, 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.
Published: 2026-09-03
Score: 8.2 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Deactivate 2Checkout payment gateway.

Tracking

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Advisories

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History

Fri, 04 Sep 2026 01:45:00 +0000

Type Values Removed Values Added
Title WHMCS 2Checkout Payment Gateway Missing Authorization Exposes Customer Data

Fri, 04 Sep 2026 00:00:00 +0000

Type Values Removed Values Added
Description Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.8, 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.
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 8.2, 'vector': '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'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-09-03T23:57:15.810Z

Reserved: 2026-07-29T15:00:02.294Z

Link: CVE-2026-67398

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T00:17:13.563

Modified: 2026-09-04T00:17:13.563

Link: CVE-2026-67398

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T01:30:04Z

Weaknesses