Improper authentication in cPanel - CVE-2026-41940
Published: April 30, 2026 / Updated: April 30, 2026
Vulnerability identifier: #VU128557
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/U:Red
CVE-ID: CVE-2026-41940
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: cPanel, Inc
Affected software:
cPanel
cPanel
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in the authentication process. A remote non-authenticated attacker can bypass authentication process and gain unauthorized access to the application.
Successful exploitation of the vulnerability may result in full system compromise.
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2026-41940
Install updates from vendor's website.