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CpanelApplication

CVE-2017-18414

HIGH · 7.4 CVSS v3.0 Published 2019-08-02
Fix available
A fix is available. Upgrade to 56.0.52 / 60.0.48 or later.
See remediation →
81/100
Remediation priority · High
Remotely reachable No privileges

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 67.9999.103 allows an open redirect in /unprotected/redirect.html (SEC-300).

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

cPanel before version 67.9999.103 contains an open redirect vulnerability in the /unprotected/redirect.html endpoint. This allows attackers to craft malicious URLs appearing to originate from the legitimate cPanel domain, potentially facilitating phishing attacks by redirecting users to attacker-controlled websites.

MitigationUpdate cPanel to version 67.9999.103 or later to patch the open redirect vulnerability in /unprotected/redirect.html.

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:< 56.0.52>= 57.9999.48, < 60.0.48>= 61.9999.55, < 62.0.30>= 62.0.31, < 64.0.40>= 64.0.42, < 66.0.23>= 66.0.24, < 67.9999.103

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
None
User interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/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. Confirm cPanel is installed
    Check for cPanel by looking for /usr/local/cpanel or running: which cpanel; ls -la /usr/local/cpanel 2>/dev/null
    Affected if cPanel is not present in the environment, the vulnerability does not apply
  2. Identify the installed cPanel version
    Run: /usr/local/cpanel/cpanel -V or cat /usr/local/cpanel/version 2>/dev/null
    Affected if The version displayed falls within any of these ranges: < 56.0.52; >= 57.9999.48 and < 60.0.48; >= 61.9999.55 and < 62.0.30; >= 62.0.31 and < 64.0.40; >= 64.0.42 and < 66.0.23; >= 66.0.24 and < 67.9999.103
  3. Verify the vulnerable endpoint exists
    Check if /usr/local/cpanel/base/frontend/paper_lantern/unprotected/redirect.html or /usr/local/cpanel/base/unprotected/redirect.html exists on the server
    Affected if The file exists and the cPanel version is in the affected ranges above

A user is affected if they are running any cPanel version before 67.9999.103 that falls within the specified version ranges and the /unprotected/redirect.html endpoint is present 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 56.0.52 / 60.0.48 / 62.0.30 or later
Fixed in 56.0.5260.0.4862.0.30
Interim mitigation

Update cPanel to version 67.9999.103 or later to patch the open redirect vulnerability in /unprotected/redirect.html.

Fix this in Cpanel Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.

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-2017-18414 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