SB20260511111 - Multiple vulnerabilities in cPanel & WHM

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Main Vulnerability Database SB20260511111

SB20260511111 - Multiple vulnerabilities in cPanel & WHM

Published: May 11, 2026

Security Bulletin ID SB20260511111
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Improper access control (CVE-ID: CVE-2026-29201)

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the LOADFEATUREFILE adminbin call when handling crafted requests. A remote user can send a specially crafted request to disclose sensitive information.


2) Code Injection (CVE-ID: CVE-2026-29202)

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to code injection in the create_user API call when processing crafted input. A remote user can submit crafted input to execute arbitrary code.


3) Link following (CVE-ID: CVE-2026-29203)

The vulnerability allows a local user to cause a denial of service and possibly escalate privileges.

The vulnerability exists due to unsafe symlink handling in file permission handling when processing symlinks. A local user can chmod an arbitrary file to cause a denial of service and possibly escalate privileges.


Remediation

Install update from vendor's website.

References