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CpanelApplication

CVE-2017-18460

HIGH · 7.8 CVSS v3.0 Published 2019-08-02
Fix available
A fix is available. Upgrade to 60.0.39 / 62.0.17 or later.
See remediation →
80/100
Remediation priority · High
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 62.0.17 allows arbitrary code execution during automatic SSL installation (SEC-221).

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 62.0.17 contains a vulnerability (SEC-221) that allows arbitrary code execution during the automatic SSL installation process. An attacker with the ability to trigger or intercept the automatic SSL installation workflow can execute arbitrary code with the privileges of the cPanel service.

MitigationUpgrade cPanel to version 62.0.17 or later to remediate this vulnerability. For systems that cannot immediately upgrade, restrict access to the automatic SSL installation features and monitor for unauthorized certificate operations.

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:>= 59.9999.58, < 60.0.39>= 61.9999.55, < 62.0.17

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
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/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. Determine installed cPanel version
    Run /usr/local/cpanel/cpanel -V or access WHM > Server Status > cPanel Version
    Affected if Version is below 62.0.17 (vulnerable range: 59.9999.58 to 60.0.39, or 61.9999.55 to 62.0.16)
  2. Check if automatic SSL installation is enabled
    In WHM, navigate to SSL/TLS > AutoSSL or check /var/cpanel/autossl* configuration files for enabled status
    Affected if AutoSSL feature is enabled and accessible to the attacker
  3. Verify user access controls for SSL certificate operations
    Review cPanel account privileges and reseller permissions in /var/cpanel/users/ or via WHM > Reseller Center
    Affected if Low-privilege or reseller accounts can trigger AutoSSL workflows
  4. Examine SSL installation logs for unauthorized activity
    Review /var/log/cpanel/autossl.log and /var/log/cpanel/ssl-log for unexpected certificate installation events
    Affected if Certificate installation events exist that were not initiated by administrators

The environment is affected if cPanel version is below 62.0.17 AND the AutoSSL feature is enabled or accessible to non-administrator accounts.

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 60.0.39 / 62.0.17 or later
Fixed in 60.0.3962.0.17
Interim mitigation

Upgrade cPanel to version 62.0.17 or later to remediate this vulnerability. For systems that cannot immediately upgrade, restrict access to the automatic SSL installation features and monitor for unauthorized certificate operations.

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-2017-18460 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