CVE-2026-67398: CWE-862 Missing Authorization in WebPros WHMCS
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.
CVE-2026-67398: CWE-862 Missing Authorization in WebPros WHMCS
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.
CVSS v4.0
Score 8.2high
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-07-29T15:00:02.294Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9a0bccacd9273b49a7b13c
Added to database: 09/04/2026, 00:07:40 UTC
Last updated: 09/04/2026, 00:52:04 UTC
Views: 6
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