CVE-2026-29204
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | webpros |
| Product | whmcs |
| Published | May 12, 2026 |
| Last Updated | May 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
WebPros / WHMCS
7.4.0 ≤ 18.12.2 18.13.0 < 18.13.3 9.0.0 < 9.0.4