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Critical · 9.8 Known exploited · Ransomware Scanner template Public exploit CVE-2026-41940 EUVD-2026-26246GHSA-85qr-8rxc-62gv

WebPros cPanel and WHM Authentication Bypass via Login Flow

Published Apr 29, 2026 · Updated Sep 30, 2026 · Assigned by VulnCheck

Vendor: WebPros Product: cPanel Product: WHM Product: WP Squared

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.

Affected products

VendorProductAffectedFixed
WebPros cPanel 11.40.0.0 – < 11.86.0.41, 11.88.0.0 – < 11.94.0.28, 11.96.0.0 – < 11.102.0.39, 11.104.0.0 – < 11.110.0.97, 11.112.0.0 – < 11.118.0.63, 11.120.0.0 – < 11.124.0.35, 11.126.0.0 – < 11.126.0.54, 11.128.0.0 – < 11.130.0.19, 11.132.0.0 – < 11.132.0.29, 11.134.0.0 – < 11.134.0.20, 11.136.0.0 – < 11.136.0.5 11.86.0.41
WebPros WP Squared < 11.136.1.7 11.136.1.7
WebPros WHM 11.40.0.0 – < 11.86.0.41, 11.88.0.0 – < 11.94.0.28, 11.96.0.0 – < 11.102.0.39, 11.104.0.0 – < 11.110.0.97, 11.112.0.0 – < 11.118.0.63, 11.120.0.0 – < 11.124.0.35, 11.126.0.0 – < 11.126.0.54, 11.128.0.0 – < 11.130.0.19, 11.132.0.0 – < 11.132.0.29, 11.134.0.0 – < 11.134.0.20, 11.136.0.0 – < 11.136.0.5 11.86.0.41

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Exploit-DB 1

GitHub 71 repositories · most starred shown

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Advisories 2

References