CVE-2026-67398

Summary

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.

Affected Software

VendorProductVersion RangeStatus
WebProsWHMCS4.5.0 <= 8.12.2affected
WebProsWHMCS8.13.0 < 8.13.8affected
WebProsWHMCS9.0.0 < 9.0.8affected

Weaknesses

  • CWE-862: CWE-862 Missing Authorization

Workarounds

Deactivate 2Checkout payment gateway.

References