🛡️ CVE-2026-41940 — cpanel

🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-306 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-41940 is classified as CWE-306: Missing Authentication for Critical Function. A sensitive function can be reached without authenticating at all.

Affected software

CVE-2026-41940 is recorded against 3 packages.

  • cpanel (from 136.0.0 up to 136.0.5)
  • whm (from 136.0.0 up to 136.0.5)
  • wp-squared (fixed in 136.1.7)

Timeline and source

Published on 29 April 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

docs.cpanel.net
docs.wpsquared.com
support.cpanel.net
www.namecheap.com
www.vulncheck.com
labs.watchtowr.com
www.bleepingcomputer.com
github.com
www.cisa.gov

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-306
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-29
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
cpanel 136.0.0 136.0.5
whm 136.0.0 136.0.5
wp-squared 136.1.7

References

Similar Threats

Exploit Protection

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