cPanel/WHM prior 11.136.0.5 missing authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in cPanel and WHM and classified as critical. The affected element is an unknown function. The manipulation results in missing authentication. This vulnerability was named CVE-2026-41940. The attack may be performed from remote. In addition, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in cPanel and WHM. It has been classified as critical. Affected is an unknown code. The manipulation with an unknown input leads to a missing authentication vulnerability. CWE is classifying the issue as CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

cPanel and WHM versions prior to 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 in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel.

The advisory is shared for download at support.cpanel.net. This vulnerability is traded as CVE-2026-41940 since 04/22/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

The exploit is shared for download at exploit-db.com. It is declared as attacked. This issue was added on 04/30/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 05/03/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 11.110.0.97, 11.118.0.63, 11.126.0.54, 11.132.0.29, 11.134.0.20 or 11.136.0.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (52574), Zero-Day.cz (1093), EUVD (EUVD-2026-26246) and CERT Bund (WID-SEC-2026-1310). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • cPanel cPanel/WHM

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Attacked
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒
Zero-Day.cz: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: cPanel/WHM 11.110.0.97/11.118.0.63/11.126.0.54/11.132.0.29/11.134.0.20/11.136.0.5

Timelineinfo

04/22/2026 CVE reserved
04/29/2026 +7 days Advisory disclosed
04/29/2026 +0 days VulDB entry created
05/27/2026 +28 days VulDB entry last update

Sourcesinfo

Advisory: support.cpanel.net
Status: Confirmed

CVE: CVE-2026-41940 (🔒)
GCVE (CVE): GCVE-0-2026-41940
GCVE (VulDB): GCVE-100-360168
EUVD: 🔒
CERT Bund: WID-SEC-2026-1310 - cPanel cPanel/WHM: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/29/2026 17:46
Updated: 05/27/2026 14:25
Changes: 04/29/2026 17:46 (74), 04/30/2026 06:26 (1), 04/30/2026 08:26 (7), 04/30/2026 19:57 (13), 05/05/2026 17:57 (1), 05/08/2026 18:07 (2), 05/27/2026 14:25 (3)
Complete: 🔍
Cache ID: 216::103

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