Link following in cPanel - CVE-2026-29203

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Main Vulnerability Database Vulnerabilities #VU131013

Link following in cPanel - CVE-2026-29203

Published: May 11, 2026


Vulnerability identifier: #VU131013
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-29203
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
cPanel
Software vendor:
cPanel, Inc

Description

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 security update from vendor's website.

External links