CVE-2026-29204

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-29204
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.

9.1 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://help.whmcs.com/m/125386/l/2073908-cve-2026-29204
Configurations

No configuration.

History

12 May 2026, 22:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 10.0 		v2 : unknown
v3 : 9.1
References
  • {'url': 'https://help.whmcs.com/m/125386/l/2073908-cve-2026-29204?token=_4RH-0s0febHsrNiC8GdPymsqg3_nSdT', 'source': 'support@hackerone.com'}
  • () https://help.whmcs.com/m/125386/l/2073908-cve-2026-29204 -
Summary (en) 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. (en) 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.

12 May 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-12 18:16

Updated : 2026-05-13 15:54

NVD link : CVE-2026-29204

Mitre link : CVE-2026-29204

CVE.ORG link : CVE-2026-29204

JSON object : View

Products Affected

No product.

CWE
CWE-639

Authorization Bypass Through User-Controlled Key