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CVE-2025-26803 cPanel CVE debrief

cPanel’s EasyApache 4 25.7 release includes a security update for Passenger that addresses CVE-2025-26803. The vendor advisory also notes updated packages for Tomcat 10.1, NodeJS 18, and Memcached 1.6. Based on the supplied source corpus, the actionable takeaway is straightforward: operators running cPanel/WHM with EasyApache 4 should verify they have the 25.7 release or later applied so the Passenger fix is in place.

Vendor
cPanel
Product
cPanel/WHM
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2025-02-24
Original CVE updated
2025-02-24
Advisory published
Unknown
Advisory updated
Unknown

Who should care

cPanel/WHM administrators, hosting providers, and anyone managing systems that use EasyApache 4 with Passenger enabled or installed.

Technical summary

The only vulnerability-specific detail in the supplied corpus is that Passenger received a security update in EasyApache 4 25.7 to address CVE-2025-26803. The source material does not include the vulnerability class, attack prerequisites, impact scope, or CVSS score. The release note does confirm the affected maintenance stream is EasyApache 4 and that the fix is delivered through the vendor’s package update channel.

Defensive priority

Elevated. The vendor explicitly labels this as a security update, but the supplied corpus does not provide CVSS or impact details. Prioritize routine patch validation and package reconciliation on exposed cPanel/WHM hosts.

Recommended defensive actions

  • Confirm whether EasyApache 4 25.7 or a later release is installed on all cPanel/WHM systems.
  • Review Passenger package versions on managed hosts and apply the vendor update if they lag behind the EasyApache 4 25.7 release.
  • Validate update deployment across staging and production so the security fix is consistently present.
  • Check the EasyApache 4 change log referenced by cPanel for any additional package-level impacts before maintenance windows.
  • Monitor the CVE record and NVD entry for any newly published impact details or scoring updates.

Evidence notes

The vendor advisory at the official cPanel release notes page states: “This release includes updated versions of Tomcat 10.1, NodeJS 18, Memcached 1.6, and a security update for Passenger to address CVE-2025-26803.” The supplied corpus does not include CVSS, exploitability details, or dates for the CVE record, so those are intentionally not inferred.

Official resources

Public vendor advisory and public CVE record only; no exploit details or unsupported impact claims included.