SB2026043060 - Authentication bypass in cPanel & WHM
Published: April 30, 2026 Updated: April 30, 2026
Security Bulletin ID
SB2026043060
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper authentication (CVE-ID: CVE-2026-41940)
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.
Remediation
Install update from vendor's website.