CVE-2026-41940
CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
WebPros cPanel & WHM and WP2 (WordPress Squared)
PublishedApr 29, 2026
First seenApr 29, 2026
Added to KEVApr 30, 2026
Weakness typeCWE-306Missing authentication for critical function
How to fix
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.
CISA due date: May 3, 2026Update
- cpanel cpanel86.0.41, 110.0.97, 118.0.63, 124.0.35, 126.0.54, 130.0.19, 132.0.29, 134.0.20, 136.0.5 or later
- cpanel whm86.0.41, 110.0.97, 118.0.63, 124.0.35, 126.0.54, 130.0.19, 132.0.29, 134.0.20, 136.0.5 or later
- cpanel wp_squared136.1.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cpanel cpanel | 11.40 ≤ v < 86.0.41, 88.0.0 ≤ v < 110.0.97, 112.0.0 ≤ v < 118.0.63, 120.0.0 ≤ v < 124.0.35, 126.0.1 ≤ v < 126.0.54, 128.0.0 ≤ v < 130.0.19, 132.0.0 ≤ v < 132.0.29, 134.0.0 ≤ v < 134.0.20, 136.0.0 ≤ v < 136.0.5 | 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 |
| cpanel whm | 11.40 ≤ v < 86.0.41, 88.0.0 ≤ v < 110.0.97, 112.0.0 ≤ v < 118.0.63, 120.0.0 ≤ v < 124.0.35, 126.0.1 ≤ v < 126.0.54, 128.0.0 ≤ v < 130.0.19, 132.0.0 ≤ v < 132.0.29, 134.0.0 ≤ v < 134.0.20, 136.0.0 ≤ v < 136.0.5 | 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 |
| cpanel wp_squared | v < 136.1.7 | 136.1.7 |
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