CISA KEV · Known exploitedCritical

CVE-2026-41940

WebPros cPanel & WHM and WP2 (WordPress Squared)

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
9.3
EPSS
97.9%
99.9% percentile
CISA KEV
Listed
Published
2026.04.30
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability97.9%
Technical severityCVSS 9.3

Vulnerability overview

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 product and versions

Product
WebPros cPanel & WHM and WP2 (WordPress Squared)
Affected versions
11.40.0.0, 11.88.0.0, 11.96.0.0, 11.104.0.0, 11.112.0.0, 11.120.0.0, 11.126.0.0, 11.128.0.0, 11.132.0.0, 11.134.0.0, 11.136.0.0, >= 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
Fixed versions
86.0.41, 110.0.97, 118.0.63, 124.0.35, 126.0.54, 130.0.19, 132.0.29, 134.0.20, 136.0.5, 136.1.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA 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.

Due date: 2026.05.03
  1. 1
    Identify

    Confirm that WebPros cPanel & WHM and WP2 (WordPress Squared) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
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
CWE
CWE-306
KEV added
2026.04.30
Ransomware use
확인됨
CVE-2026-41940 — WebPros cPanel & WHM and WP2 (WordPress Squared) | SECUFOCUS NOW