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PatchSiren cyber security CVE debrief

CVE-2025-23166 cPanel CVE debrief

cPanel’s EasyApache 4 25.16 release includes security updates for NodeJS 20 and NodeJS 22 that address CVE-2025-23166. The vendor note also mentions package updates for Ruby Rack, Tomcat 10.1, and APR. The supplied source does not describe the underlying flaw, so the practical takeaway is to keep EasyApache 4 and its Node.js packages current.

Vendor
cPanel
Product
EasyApache 4
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2025-05-19
Original CVE updated
2025-05-28
Advisory published
Unknown
Advisory updated
Unknown

Who should care

cPanel/WHM administrators and hosting operators who deploy or maintain EasyApache 4, especially systems using NodeJS 20 or NodeJS 22 packages.

Technical summary

According to the vendor release note, EasyApache 4 25.16 delivers updated packages and includes security fixes for NodeJS 20 and NodeJS 22 tied to CVE-2025-23166. No additional technical details about the vulnerability are provided in the supplied corpus. The advisory is package-focused rather than application-behavior-focused, so remediation is centered on applying the updated EasyApache 4 packages.

Defensive priority

Medium priority for environments using EasyApache 4 NodeJS 20 or 22; prioritize prompt maintenance if those packages are installed.

Recommended defensive actions

  • Review whether any cPanel/WHM servers use EasyApache 4 NodeJS 20 or NodeJS 22.
  • Apply the EasyApache 4 25.16 updates from the vendor source.
  • Confirm that the updated NodeJS packages are installed on all affected servers.
  • Track related EasyApache 4 package updates referenced by the same release note, including Ruby Rack, Tomcat 10.1, and APR.
  • Revalidate server maintenance procedures so future EasyApache 4 package security updates are deployed quickly.

Evidence notes

The vendor-official EasyApache 4 25.16 release note explicitly states that it includes security updates for NodeJS 20 and NodeJS 22 to address CVE-2025-23166. The supplied material does not include CVSS, exploitability details, affected versions beyond the NodeJS package streams named in the note, or any CVE publication/modification timestamps.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-23166 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-23166

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-23166 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-23166

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Vendor advisory source

    Unverified legacy reference

    URL: https://docs.cpanel.net/release-notes/release-notes/

    cpanel_changelog_rss

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.