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CpanelApplication

CVE-2016-10789

HIGH · 8.8 CVSS v3.0 Published 2019-08-06
Fix available
A fix is available. Upgrade to 11.54.0.33 / 56.0.39 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
cPanel before 60.0.25 allows code execution via the cpsrvd 403 error response handler (SEC-191).

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

cPanel before version 60.0.25 contains a code execution vulnerability in the cpsrvd daemon's 403 error response handler. An attacker can potentially execute arbitrary code via crafted requests that trigger the error handler, likely through some form of injection or improper input handling in the error page generation process.

MitigationUpgrade cPanel to version 60.0.25 or later to patch the vulnerability in the cpsrvd 403 error handler.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
CpanelApplication
Affected:>= 11.54.0.0, < 11.54.0.33>= 55.9999.61, < 56.0.39>= 57.9999.48, < 58.0.37>= 59.9999.58, < 60.0.25

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify cPanel version
    Run command: /usr/local/cpanel/cpanel -V or check /usr/local/cpanel/version
    Affected if Version matches any of these ranges: 11.54.0.0-11.54.0.32, 55.9999.61-56.0.38, 57.9999.48-58.0.36, 59.9999.58-60.0.24
  2. Verify cpsrvd daemon is running
    Run command: ps aux | grep cpsrvd
    Affected if cpsrvd process is running on the system
  3. Check if web server is accessible externally
    Review firewall rules with: iptables -L -n or check cPanel WHM firewall configuration for ports 2082, 2083, 2086, 2087
    Affected if cpsrvd web ports (2082/2083 or 2086/2087) are exposed to network
  4. Confirm 403 error handling is functional
    Send a request that triggers a 403 error to the cPanel web server and observe the response
    Affected if 403 error pages are being served, indicating the vulnerable handler is active

The system is affected if cPanel version falls within any of the four vulnerable ranges AND cpsrvd is running and accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 11.54.0.33 / 56.0.39 / 58.0.37 or later
Fixed in 11.54.0.3356.0.3958.0.37
Interim mitigation

Upgrade cPanel to version 60.0.25 or later to patch the vulnerability in the cpsrvd 403 error handler.

Fix this in Cpanel Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-10789 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data