Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-41940 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/watchtowrlabs/watchTowr-vs-cPanel-WHM-AuthBypass-to-RCE.py CISA-ADPExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-41940 CISA-ADPUS Government Resource
https://labs.watchtowr.com/the-internet-is-falling-down-falling-down-falling-down-cpanel-whm-authentication-bypass-cve-2026-41940/ CVEExploitThird Party Advisory
https://www.bleepingcomputer.com/news/security/critrical-cpanel-flaw-mass-exploited-in-sorry-ransomware-attacks/ CVEPress/Media Coverage
https://docs.cpanel.net/release-notes/release-notes [email protected]Release Notes

see all 9 references

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function VulnerabilityApr 30, 2026May 3, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-306Missing Authentication for Critical Function[email protected]

Affected Products

ProductVersions
cpanel cpanel
>= 11.40, < 86.0.41
>= 88.0.0, < 110.0.97
>= 112.0.0, < 118.0.63
>= 120.0.0, < 124.0.35
>= 126.0.1, < 126.0.54

CPE

  • cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
cpanel whm
>= 11.40, < 86.0.41
>= 88.0.0, < 110.0.97
>= 112.0.0, < 118.0.63
>= 120.0.0, < 124.0.35
>= 126.0.1, < 126.0.54

CPE

  • cpe:2.3:a:cpanel:whm:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
cpanel wp squared
< 136.1.7

CPE

  • cpe:2.3:a:cpanel:wp_squared:*:*:*:*:*:wordpress:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-41940
NVD Published Date:
Apr 29, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-41940 Details - Not Deferred