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Vulnerabilities

Vulnerability · CVE-2026-41940

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

Published Apr 28, 2026 · catalog updated Sep 30, 2026 · WebPros cPanel & WHM and WP2 (WordPress Squared)

Patch now

CVE-2026-41940 is in the CISA known-exploited catalog, due May 3, 2026. Confirm WebPros cPanel & WHM and WP2 (WordPress Squared) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
98.53%
Remediation
Remediation guidance
Affected products
cpe cpanel/cpanel · cpe cpanel/whm · cpe cpanel/wp squared · vendor WebPros cPanel & WHM and WP2 (WordPress Squared)

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe cpanel/cpanelversion unspecified
  • cpe cpanel/whmversion unspecified
  • cpe cpanel/wp squaredversion unspecified
  • vendor WebPros cPanel & WHM and WP2 (WordPress Squared)version unspecified

How to fix CVE-2026-41940

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-41940 is in the CISA known-exploited catalog, due May 3, 2026. Confirm WebPros cPanel & WHM and WP2 (WordPress Squared) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-306: Missing Authentication for Critical Function. EPSS 98.53%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 29, 2026 · Catalog

    Detected

    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.

  2. Apr 30, 2026 · CISA KEV

    Known exploited

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

  3. May 3, 2026 · CISA KEV

    Remediation due

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

  4. Sep 30, 2026 · Catalog

    Updated

    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.

  5. Sep 30, 2026 · NIST NVD

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2026-41940

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-41940

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-41940

    30-day exploitation probability 98.5%

    first.org
  • Exploit DatabasePublic exploit reference52574

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/cpanel_whm_auth_bypass_rce

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2026-41940

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-41940

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.