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.

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History

Wed, 13 May 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Webpros
Webpros whmcs
Vendors & Products Webpros
Webpros whmcs

Wed, 13 May 2026 00:30:00 +0000

Type Values Removed Values Added
Title Unauthorized cPanel Access via Missing Addon ID Ownership Verification in WHMCS

Tue, 12 May 2026 22:30:00 +0000


Tue, 12 May 2026 22:15:00 +0000

Type Values Removed Values Added
Description Insufficient ownership checks in `clientarea.php` allow 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 resources and their cPanel account. 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.
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Tue, 12 May 2026 21:00:00 +0000

Type Values Removed Values Added
Title Unauthorized cPanel Access via Missing Addon ID Ownership Verification in WHMCS

Tue, 12 May 2026 18:15:00 +0000

Type Values Removed Values Added
Description Insufficient ownership checks in `clientarea.php` allow 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 resources and their cPanel account.
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-05-12T21:57:08.277Z

Reserved: 2026-03-04T15:00:09.267Z

Link: CVE-2026-29204

cve-icon Vulnrichment

Updated: 2026-05-12T21:12:59.156Z

cve-icon NVD

Status : Received

Published: 2026-05-12T18:16:51.030

Modified: 2026-05-12T22:16:33.300

Link: CVE-2026-29204

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-13T10:37:50Z

Weaknesses