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WebminApplication

CVE-2023-41163

MEDIUM · 6.1 CVSS v3.1 Published 2023-08-30
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
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
A Reflected Cross-site scripting (XSS) vulnerability in the file manager tab in Usermin 2.000 allows remote attackers to inject arbitrary web script or HTML via the replace in results field while replacing the results under the tools drop down.

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

A reflected XSS vulnerability exists in Usermin 2.000's file manager tab. Attackers can inject malicious scripts through the 'replace in results' field under the tools dropdown. When a user performs a replace operation, the unsanitized input is reflected in the response, executing the attacker's JavaScript in the victim's browser.

MitigationImplement proper output encoding/HTML escaping on user-supplied input in the replace function, and add input validation to reject or sanitize special characters before reflecting content back to the user.

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
WebminApplication
Affected:= 2.000

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
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/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 Webmin or Usermin installation
    Check if Webmin/Usermin is installed by looking for its process or service. Common locations: /etc/webmin/, /usr/share/webmin/, or check systemctl status webmin. Alternatively, check for port 10000 (default Webmin port) listening.
    Affected if Webmin or Usermin version 2.000 is installed and running
  2. Identify the exact version number
    Access the Webmin configuration page, or run: rpm -q webmin (RPM-based) or dpkg -l webmin (DEB-based). You can also check /etc/webmin/version or the Webmin login page footer which displays the version.
    Affected if The installed version is exactly 2.000 (this is a narrow, specific version)
  3. Verify file manager module is enabled
    Log into Webmin/Usermin interface and check if the 'File Manager' module is available. This can also be checked via Webmin's module configuration at: /webmin/filemin/ or by examining /etc/webmin/filemin/config.
    Affected if File manager module is enabled and accessible to users
  4. Confirm replace functionality is accessible
    In the file manager interface, navigate to the tools dropdown and locate the 'replace in results' or 'find and replace' feature. Check if regular users or administrators can access this tool.
    Affected if Users have access to the replace function in the file manager tools dropdown

You are affected if running Webmin/Usermin exactly version 2.000 with the file manager module enabled and the replace feature accessible to 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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper output encoding/HTML escaping on user-supplied input in the replace function, and add input validation to reject or sanitize special characters before reflecting content back to the user.

Recommended fix Moderate confidence

Webmin/Usermin 2.001 or later (latest stable release)

  1. Check the current Webmin/Usermin version by navigating to the Webmin Configuration page or running 'webmin --version'
  2. Navigate to Webmin's official download page at webmin.com/download.html or the GitHub repository to find the latest stable release
  3. Download and install the latest version of Webmin/Usermin that includes the security fix for CVE-2023-41163
  4. After upgrade, verify the file manager's 'replace in results' functionality works correctly and the XSS vulnerability is remediated
  5. Consider reviewing Webmin's release notes for version 2.001 or later to confirm the security patch was included
Caveat Review release notes before upgrading as minor version upgrades in Webmin occasionally include configuration changes that may require adjustment

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

Fix this in Webmin Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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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-2023-41163 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