cPanel&WHM Auth Bypass in Login (v<11.110.0.97, 11.118.0.63-54, 11.132.0.29, 11.134.0.20)
CVE-2026-41940 Published on April 29, 2026
WebPros cPanel and WHM Authentication Bypass via Login Flow
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.
Known Exploited Vulnerability
This WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function Vulner vulnerability is part of CISA's list of Known Exploited Vulnerabilities. WebPros cPanel & WHM (WebHost Manager) and WP2 (WordPress Squared) contain an authentication bypass vulnerability in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel.
The following remediation steps are recommended / required by May 3, 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2026-41940 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
Missing Authentication for Critical Function
The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Products Associated with CVE-2026-41940
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Affected Versions
WebPros cPanel:- Version 11.40.0.0 and below 11.86.0.41 is affected.
- Version 11.88.0.0 and below 11.94.0.28 is affected.
- Version 11.96.0.0 and below 11.102.0.39 is affected.
- Version 11.104.0.0 and below 11.110.0.97 is affected.
- Version 11.112.0.0 and below 11.118.0.63 is affected.
- Version 11.120.0.0 and below 11.124.0.35 is affected.
- Version 11.126.0.0 and below 11.126.0.54 is affected.
- Version 11.128.0.0 and below 11.130.0.19 is affected.
- Version 11.132.0.0 and below 11.132.0.29 is affected.
- Version 11.134.0.0 and below 11.134.0.20 is affected.
- Version 11.136.0.0 and below 11.136.0.5 is affected.
- Version 11.136.1.7 is unaffected.
- Version 11.40.0.0 and below 11.86.0.41 is affected.
- Version 11.88.0.0 and below 11.94.0.28 is affected.
- Version 11.96.0.0 and below 11.102.0.39 is affected.
- Version 11.104.0.0 and below 11.110.0.97 is affected.
- Version 11.112.0.0 and below 11.118.0.63 is affected.
- Version 11.120.0.0 and below 11.124.0.35 is affected.
- Version 11.126.0.0 and below 11.126.0.54 is affected.
- Version 11.128.0.0 and below 11.130.0.19 is affected.
- Version 11.132.0.0 and below 11.132.0.29 is affected.
- Version 11.134.0.0 and below 11.134.0.20 is affected.
- Version 11.136.0.0 and below 11.136.0.5 is affected.