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critical·Exposed Panels·Updated Apr 29, 2026

cPanel & WHM - Authentication Bypass via Session-File CRLF Injection

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, subdomain, ipv4
CostFree
3.1k
Times Used
continuous scan runs
0
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
🔴
CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVECVE-2026-41940
9.3
CVSScritical
Exploitable remotely over the internet · no authentication required.

cPanel and WHM versions after 11.40 contain an authentication bypass vulnerability in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
cPanelby WebPros
AFFECTED< 11.86.0.41SAFE ✓≥ 11.86.0.41
WP Squaredby WebPros
11.136.1.7
WHMby WebPros
AFFECTED< 11.86.0.41SAFE ✓≥ 11.86.0.41
Updated Sep 9, 2026View on NVD →

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