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Wing Ftp ServerApplication · Wftpserver

CVE-2023-37875

MEDIUM · 5.4 CVSS v3.1 Published 2023-09-12
Fix available
A fix is available. Upgrade to after 7.2.0 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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
Improper encoding or escaping of output in Wing FTP Server (User Web Client) allows Cross-Site Scripting (XSS).This issue affects Wing FTP Server: <= 7.2.0.

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

Stored Cross-Site Scripting (XSS) vulnerability in Wing FTP Server's User Web Client allows attackers to inject malicious JavaScript through unsanitized user input that is improperly encoded when displayed to other users.

MitigationUpgrade Wing FTP Server to a version newer than 7.2.0. If immediate patching is not feasible, disable the User Web Client or implement input validation/output encoding as a temporary workaround.

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
Wing Ftp ServerApplication
Affected:<= 7.2.0

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
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 Wing FTP Server installation and version
    Check the installed version of Wing FTP Server (typically via the administration console, or by running 'wingftp --version' or checking the software's About section)
    Affected if The installed version is 7.2.0 or lower
  2. Verify User Web Client is enabled
    Access the Wing FTP Server administration panel and navigate to the User Web Client settings to confirm whether this feature is currently enabled
    Affected if User Web Client is enabled and accessible to non-admin users
  3. Identify accessible user input fields in User Web Client
    Log in as a regular (non-admin) user via the User Web Client and identify fields that accept user input and display it back (such as user profile fields, custom commands, or file/folder names)
    Affected if User Web Client exposes input fields that store and display user-supplied content to other users
  4. Inspect stored user data for unencoded content
    Through the administration console, examine user account properties or stored custom variables that are rendered in the User Web Client interface without proper HTML encoding
    Affected if User-provided data appears to be rendered without sanitization (visible raw characters that would otherwise be encoded, such as < or > symbols)

You are affected if Wing FTP Server version is 7.2.0 or lower AND the User Web Client feature is enabled and accessible to users who can input data that gets displayed to other users.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 7.2.0
Interim mitigation

Upgrade Wing FTP Server to a version newer than 7.2.0. If immediate patching is not feasible, disable the User Web Client or implement input validation/output encoding as a temporary workaround.

Recommended fix Moderate confidence

Latest stable version available at www.wftpserver.com (version > 7.2.0)

  1. 1. Visit the official Wing FTP Server website at www.wftpserver.com to check for the latest version
  2. 2. Look for release notes or a changelog specifically mentioning security fixes for CVE-2023-37875
  3. 3. If a newer version (greater than 7.2.0) is available, download it from the official source
  4. 4. Before upgrading, backup your current Wing FTP Server configuration and data
  5. 5. Install the new version following the vendor's upgrade documentation
  6. 6. Verify the User Web Client is functioning correctly after upgrade
  7. 7. Test that the XSS vulnerability is no longer present in the User Web Client
Caveat Review vendor release notes for any configuration or feature changes between your current version and the new version

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Wing Ftp Server Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,490
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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-2023-37875 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