CVE-2026-41940: CWE-306 Missing Authentication for Critical Function in cPanel, L.L.C. cPanel & WHM
CVE-2026-41940 is a critical authentication bypass vulnerability affecting multiple versions of cPanel & WHM prior to specific patch releases. This flaw allows unauthenticated remote attackers to gain unauthorized access to the control panel by bypassing the login flow. The vulnerability is classified under CWE-306, indicating missing authentication for a critical function. The CVSS 4. 0 base score is 9. 3, reflecting its critical severity and the ease of exploitation without privileges or user interaction. No official patch or remediation guidance is currently provided by the vendor, and no known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
cPanel & WHM versions before 11.110.0.97, 11.118.0.63, 11.126.0.54, 11.132.0.29, 11.134.0.20, and 11.136.0.5 contain an authentication bypass vulnerability (CWE-306) in the login flow. This vulnerability allows unauthenticated remote attackers to access the control panel without proper authentication. The vulnerability has a CVSS 4.0 score of 9.3, indicating critical impact with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. The vendor has not published an official fix or remediation level as of the data provided. The affected product is not a cloud service, so remediation depends on patching the affected software versions.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated remote attacker to bypass authentication controls and gain unauthorized access to the cPanel & WHM control panel. This can lead to full compromise of the affected system's management interface, potentially exposing sensitive data and administrative functions. The critical CVSS score reflects the high impact on confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided in the available data, administrators should monitor cPanel, L.L.C. advisories closely for updates. Until a fix is available, consider restricting network access to the control panel interface to trusted IPs and implementing additional access controls where possible.
CVE-2026-41940: CWE-306 Missing Authentication for Critical Function in cPanel, L.L.C. cPanel & WHM
Description
CVE-2026-41940 is a critical authentication bypass vulnerability affecting multiple versions of cPanel & WHM prior to specific patch releases. This flaw allows unauthenticated remote attackers to gain unauthorized access to the control panel by bypassing the login flow. The vulnerability is classified under CWE-306, indicating missing authentication for a critical function. The CVSS 4. 0 base score is 9. 3, reflecting its critical severity and the ease of exploitation without privileges or user interaction. No official patch or remediation guidance is currently provided by the vendor, and no known exploits are reported in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
cPanel & WHM versions before 11.110.0.97, 11.118.0.63, 11.126.0.54, 11.132.0.29, 11.134.0.20, and 11.136.0.5 contain an authentication bypass vulnerability (CWE-306) in the login flow. This vulnerability allows unauthenticated remote attackers to access the control panel without proper authentication. The vulnerability has a CVSS 4.0 score of 9.3, indicating critical impact with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. The vendor has not published an official fix or remediation level as of the data provided. The affected product is not a cloud service, so remediation depends on patching the affected software versions.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated remote attacker to bypass authentication controls and gain unauthorized access to the cPanel & WHM control panel. This can lead to full compromise of the affected system's management interface, potentially exposing sensitive data and administrative functions. The critical CVSS score reflects the high impact on confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided in the available data, administrators should monitor cPanel, L.L.C. advisories closely for updates. Until a fix is available, consider restricting network access to the control panel interface to trusted IPs and implementing additional access controls where possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-04-22T18:50:43.621Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f22c83cbff5d86102980f5
Added to database: 4/29/2026, 4:06:27 PM
Last enriched: 4/29/2026, 4:21:46 PM
Last updated: 4/29/2026, 5:40:11 PM
Views: 3
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