All vulnerabilities
CVE-2026-41940

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

WebPros cPanel & WHM and WP2 (WordPress Squared)Applications & CMS
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationExploited in the wildAdded to KEV 30 Apr 2026. Known ransomware useCISA KEV
Exploit odds (EPSS)98.5%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in11.86.0.41Also 11.94.0.28, 11.102.0.39 and 9 moreCVE List
Federal deadline3 May 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

Show all 23 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 28 Apr 2026Exploit code publicMetasploit
  2. 29 Apr 2026, 15:10 UTCPublishedCVE List
  3. 30 Apr 2026Added to CISA KEVCISA KEV

Campaigns 1

From published threat research, as each report states it.

Public exploit code and templates 3

  • Exploit modulecPanel/WHM CRLF Injection Authentication Bypass RCE 28 Apr 2026Metasploit
  • Webapps exploitcPanel - CRLF Injection 26 May 2026Exploit-DB
  • Scanner templatecPanel & WHM - Authentication Bypass via Session-File CRLF InjectionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 23

  • cPanelaffected: 11.40.0.0 before 11.86.0.41CVE List
  • cPanelaffected: 11.88.0.0 before 11.94.0.28CVE List
  • cPanelaffected: 11.96.0.0 before 11.102.0.39CVE List
  • cPanelaffected: 11.104.0.0 before 11.110.0.97CVE List
  • cPanelaffected: 11.112.0.0 before 11.118.0.63CVE List
  • cPanelaffected: 11.120.0.0 before 11.124.0.35CVE List
  • cPanelaffected: 11.126.0.0 before 11.126.0.54CVE List
  • cPanelaffected: 11.128.0.0 before 11.130.0.19CVE List
  • cPanelaffected: 11.132.0.0 before 11.132.0.29CVE List
  • cPanelaffected: 11.134.0.0 before 11.134.0.20CVE List
  • cPanelaffected: 11.136.0.0 before 11.136.0.5CVE List
  • WP Squaredaffected: all versions before 11.136.1.7CVE List
  • WHMaffected: 11.40.0.0 before 11.86.0.41CVE List
  • WHMaffected: 11.88.0.0 before 11.94.0.28CVE List
  • WHMaffected: 11.96.0.0 before 11.102.0.39CVE List
  • WHMaffected: 11.104.0.0 before 11.110.0.97CVE List
  • WHMaffected: 11.112.0.0 before 11.118.0.63CVE List
  • WHMaffected: 11.120.0.0 before 11.124.0.35CVE List
  • WHMaffected: 11.126.0.0 before 11.126.0.54CVE List
  • WHMaffected: 11.128.0.0 before 11.130.0.19CVE List
  • WHMaffected: 11.132.0.0 before 11.132.0.29CVE List
  • WHMaffected: 11.134.0.0 before 11.134.0.20CVE List
  • WHMaffected: 11.136.0.0 before 11.136.0.5CVE List

References 11