CVE-2026-29204

CRITICAL CVSS 9.1 View on NVD ↗

Description

Insufficient ownership check in `clientarea.php` allows an authenticated client area user to submit requests using another user’s `addonId` without any ownership validation leading to unauthorized access to the victim's account.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://help.whmcs.com/m/125386/l/2073908-cve-2026-29204

Published: May 12, 2026 18:16 UTC Modified: May 13, 2026 15:54 UTC