9.8

CVE-2026-41940

Warnung
Medienbericht
Exploit

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cpanel ≫ Cpanel Version >= 11.40 < 86.0.41
Cpanel ≫ Cpanel Version >= 88.0.0 < 110.0.97
Cpanel ≫ Cpanel Version >= 112.0.0 < 118.0.63
Cpanel ≫ Cpanel Version >= 120.0.0 < 124.0.35
Cpanel ≫ Cpanel Version >= 126.0.1 < 126.0.54
Cpanel ≫ Cpanel Version >= 128.0.0 < 130.0.19
Cpanel ≫ Cpanel Version >= 132.0.0 < 132.0.29
Cpanel ≫ Cpanel Version >= 134.0.0 < 134.0.20
Cpanel ≫ Cpanel Version >= 136.0.0 < 136.0.5
Cpanel ≫ Whm Version >= 11.40 < 86.0.41
Cpanel ≫ Whm Version >= 88.0.0 < 110.0.97
Cpanel ≫ Whm Version >= 112.0.0 < 118.0.63
Cpanel ≫ Whm Version >= 120.0.0 < 124.0.35
Cpanel ≫ Whm Version >= 126.0.1 < 126.0.54
Cpanel ≫ Whm Version >= 128.0.0 < 130.0.19
Cpanel ≫ Whm Version >= 132.0.0 < 132.0.29
Cpanel ≫ Whm Version >= 134.0.0 < 134.0.20
Cpanel ≫ Whm Version >= 136.0.0 < 136.0.5
Cpanel ≫ Wp Squared SwPlatformwordpress Version < 136.1.7
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login

30.04.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog

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

Schwachstelle

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.

Beschreibung

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

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 98.1% 0.999
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
disclosure@vulncheck.com 9.3 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
disclosure@vulncheck.com 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-306 Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

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https://support.cpanel.net/hc/en-us/articles/40073787579671-cPanel-WHM-Security-Update-04-28-2026
Vendor Advisory
https://docs.cpanel.net/release-notes/release-notes
Release Notes
https://docs.wpsquared.com/changelogs/versions/changelog/#13617
Release Notes
https://www.namecheap.com/status-updates/ongoing-critical-security-vulnerability-in-cpanel-april-28-2026
Third Party Advisory
https://www.vulncheck.com/advisories/cpanel-and-whm-authentication-bypass-via-login-flow
Third Party Advisory
https://github.com/watchtowrlabs/watchTowr-vs-cPanel-WHM-AuthBypass-to-RCE.py
Third Party Advisory
Exploit
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-41940
US Government Resource
https://labs.watchtowr.com/the-internet-is-falling-down-falling-down-falling-down-cpanel-whm-authentication-bypass-cve-2026-41940/
Third Party Advisory
Exploit
https://www.bleepingcomputer.com/news/security/critrical-cpanel-flaw-mass-exploited-in-sorry-ransomware-attacks/
Press/Media Coverage