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OpenAdvisories
High · 8.2 CVE-2026-67398 EUVD-2026-70849GHSA-x84h-g4q5-82g8

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 …

Published Sep 3, 2026 · Updated Sep 14, 2026 · Assigned by hackerone

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.

Affected products

VendorProductAffectedFixed
WebPros WHMCS 4.5.0 – < 8.12.2, 8.13.0 – < 8.13.7, 9.0.0 – < 9.0.8 8.12.2

References