CVE-2026-41940

CRITICAL9.8

CISA KEV

Published 2026-04-29 · Updated 2026-10-26 · Source disclosure@vulncheck.com

Summary

CVE-2026-41940 is a critical-severity (CVSS 9.8) vulnerability in WebPros cPanel & WHM and WP2 (WordPress Squared). CISA added it to the Known Exploited Vulnerabilities catalog on April 30, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2026. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly.

All 1 known-exploited WebPros vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-306

CISA Known-Exploited Vulnerability

Product: WebPros — cPanel & WHM and WP2 (WordPress Squared)

Name: WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function Vulnerability

Date added: 2026-04-30 · Due: 2026-05-03

USED IN RANSOMWARE

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

References

View on NVD

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