Vulnerability Intelligence Report
WebPros cPanel and WHM Authentication Bypass via Login Flow
CVE-2026-41940
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.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.3
CRITICAL
EPSS Probability:97.93%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-306 ↗CWE-306 Missing Authentication for Critical Function
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WebPros | cPanel | 11.40.0.0 < 11.86.0.41 (affected), 11.88.0.0 < 11.94.0.28 (affected), 11.96.0.0 < 11.102.0.39 (affected), 11.104.0.0 < 11.110.0.97 (affected), 11.112.0.0 < 11.118.0.63 (affected), 11.120.0.0 < 11.124.0.35 (affected), 11.126.0.0 < 11.126.0.54 (affected), 11.128.0.0 < 11.130.0.19 (affected), 11.132.0.0 < 11.132.0.29 (affected), 11.134.0.0 < 11.134.0.20 (affected), 11.136.0.0 < 11.136.0.5 (affected) |
| WebPros | WP Squared | 11.136.1.7 (unaffected) |
| WebPros | WHM | 11.40.0.0 < 11.86.0.41 (affected), 11.88.0.0 < 11.94.0.28 (affected), 11.96.0.0 < 11.102.0.39 (affected), 11.104.0.0 < 11.110.0.97 (affected), 11.112.0.0 < 11.118.0.63 (affected), 11.120.0.0 < 11.124.0.35 (affected), 11.126.0.0 < 11.126.0.54 (affected), 11.128.0.0 < 11.130.0.19 (affected), 11.132.0.0 < 11.132.0.29 (affected), 11.134.0.0 < 11.134.0.20 (affected), 11.136.0.0 < 11.136.0.5 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
97.927%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-04-22T18:50:43 |
| Published | 2026-04-29T15:10:37 |
| Patch Date | 2026-04-28 |
| Last Updated | 2026-08-11T03:55:30 |
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