CVE-2026-41940 — WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function Vulnerability
CVE-2026-41940: WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | WebPros |
| Product | cPanel & WHM and WP2 (WordPress Squared) |
| Date added | 2026-04-30 |
| Due date | 2026-05-03 |
| Ransomware campaign use | Known |
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://support.cpanel.net/hc/en-us/articles/40073787579671-cPanel-WHM-Security-Update-04-28-2026 ; https://docs.cpanel.net/release-notes/release-notes/ ; https://docs.wpsquared.com/changelogs/versions/changelog/#13617 ; https://nvd.nist.gov/vuln/detail/CVE-2026-41940"
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41940
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog