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CVE-2026-41940

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

WebPros · CWE-306 · in CISA KEV since 2026-04-30

ExigentCISA federal deadline · Overdue by 6 monthsRansomwareCISA KEVActively Exploited
95

EVRS 95 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 9 of 2,960 tracked

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Why it scores 95

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

cpanel: update to 86.0.41 or later | cpanel: update to 110.0.97 or later | cpanel: update to 118.0.63 or later | cpanel: update to 124.0.35 or later | cpanel: update to 126.0.54 or later | cpanel: update to 130.0.19 or later

Affected versions

  • 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>= 128.0.0 < 130.0.19>= 132.0.0 < 132.0.29>= 134.0.0 < 134.0.20>= 136.0.0 < 136.0.5
  • 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>= 128.0.0 < 130.0.19>= 132.0.0 < 132.0.29>= 134.0.0 < 134.0.20>= 136.0.0 < 136.0.5
  • wp squared< 136.1.7

Remediation

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

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.3 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.985 (99.92nd pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2026-05-03 · CISA federal deadline · Overdue by 6 months CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.3 (v4.0), assigned by VulnCheck. Listed ENISA EUVD

Description

NVD

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.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: cPanel/WHM CRLF Injection Authentication Bypass RCE (multi/http/cpanel_whm_auth_bypass_rce). A module existing is not the same as active exploitation; see metasploit.com.