dbcve.org
Path TraversalWeakness · CWE-22

CVE-2026-40724

MEDIUM · 6.5 CVSS v3.1 Published 2026-06-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
71/100
Remediation priority · Elevated
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
CP Client Arbitrary File Download in Client Portal (Pro) <= 5.6.2 versions.

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

This is an authenticated arbitrary file download vulnerability in the Client Portal (Pro) plugin affecting versions 5.6.2 and below. An attacker with valid client credentials could exploit insufficient path validation in the file download functionality to retrieve arbitrary files from the server filesystem, potentially exposing sensitive configuration files, credentials, or other application data.

MitigationUpgrade Client Portal (Pro) to a version beyond 5.6.2 that contains the security patch. If no upgrade is available, implement input validation and path traversal protections on file download endpoints, restricting downloads to allowed directories only.

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

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
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 Client Portal (Pro) plugin is installed
    Navigate to the WordPress admin dashboard under Plugins > Installed Plugins and locate 'Client Portal (Pro)' in the list. Note the version number displayed.
    Affected if The plugin is installed and the version shown is 5.6.2 or lower.
  2. Check WordPress plugins directory for the plugin file
    Access the server filesystem via FTP or file manager and locate the plugin directory at /wp-content/plugins/client-portal-pro/. Open the main plugin file (usually client-portal-pro.php) and look for the version definition in the plugin header comment.
    Affected if The version comment in the plugin header reads 5.6.2 or a lower version number.
  3. Verify client portal file download feature is enabled
    In the WordPress admin, go to the Client Portal settings page (usually under Client Portal > Settings or a similar menu item). Look for settings related to file downloads, document access, or file retrieval. Check if any download or file access functionality is turned on.
    Affected if File download or document access features are enabled in the plugin settings.
  4. Inspect file download endpoint configuration
    Examine the plugin files for download-related PHP files (commonly named download.php, file.php, or similar within the plugin directory). Check if these files contain path validation logic or sanitize the file path parameter before processing the download request.
    Affected if The download handler accepts a file path parameter without proper sanitization or path traversal protection (e.g., missing checks for '../' sequences or realpath() validation).
  5. Review server access logs for suspicious download activity
    Check web server access logs (Apache error.log, Nginx access.log, or similar) for requests to known download endpoints within the plugin. Look for patterns like '?file=..' or multiple requests with unusual path traversal sequences.
    Affected if Log entries show requests to download endpoints containing path traversal patterns or accessing system files outside the expected upload directory.

A user is affected if the Client Portal (Pro) plugin version is 5.6.2 or below AND file download functionality is enabled in the plugin settings.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade Client Portal (Pro) to a version beyond 5.6.2 that contains the security patch. If no upgrade is available, implement input validation and path traversal protections on file download endpoints, restricting downloads to allowed directories only.

Have this fixed 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
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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-2026-40724 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