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CpanelApplication

CVE-2016-10787

HIGH · 8.1 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 →
87/100
Remediation priority · High
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
The Host Access Control feature in cPanel before 60.0.25 mishandles actionless host.deny entries (SEC-187).

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 · high confidence

The Host Access Control feature in cPanel before version 60.0.25 improperly handles host.deny entries that lack an action specification, potentially allowing attackers to bypass intended access restrictions.

MitigationUpdate cPanel to version 60.0.25 or later to resolve the host.deny entry parsing issue.

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
None

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

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. Determine cPanel version
    Run 'cat /usr/local/cpanel/version' or check the cPanel version in WHM footer
    Affected if Version falls within ranges: 11.54.0.0-11.54.0.32, 55.9999.61-56.0.38, 57.9999.48-58.0.36, or 59.9999.58-60.0.24
  2. Confirm Host Access Control is in use
    Locate the host.deny file typically in /etc/hosts.deny or check for Host Access Control configuration in WHM under Security Center
    Affected if Host Access Control feature is enabled and host.deny file exists with entries
  3. Inspect host.deny entries for missing action specifications
    Examine the host.deny file for entries that lack an action field (such as entries without 'deny' or 'allow' directive)
    Affected if host.deny contains entries without a specified action (e.g., entries that only list IP addresses or ranges without a deny directive)

You are affected if running a cPanel version listed in the vulnerable ranges AND the Host Access Control feature is active with host.deny entries that lack action specifications.

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

Update cPanel to version 60.0.25 or later to resolve the host.deny entry parsing issue.

Fix this in Cpanel Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

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-2016-10787 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