UserminApplication · Webmin

CVE-2023-41161

MEDIUM · 5.4 CVSS v3.1 Published 2023-09-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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
Multiple stored cross-site scripting (XSS) vulnerabilities in Usermin 2.000 allow remote attackers to inject arbitrary web script or HTML via the key comment to different pages such as public key details, Export key, sign key, send to key server page, and fetch from key server page tab.

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

Usermin 2.000 contains multiple stored XSS vulnerabilities in the key comment parameter across several pages including public key details, export key, sign key, send to key server, and fetch from key server. The application fails to properly sanitize user-supplied input in the key comment field, allowing attackers to inject malicious HTML or JavaScript that executes when other users view the affected pages.

MitigationImplement proper input validation and context-aware output encoding for the key comment parameter across all affected pages to prevent XSS execution.

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
UserminApplication
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
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 Usermin version
    Check the installed Usermin version by accessing the login page footer, checking /usermin/version file, or running 'usermin -v' command if available
    Affected if Version is exactly 2.000 (other versions are not affected)
  2. Identify GPG key management module
    Look for GPG/PGP key management functionality in the Usermin interface - typically found under the 'Others', 'Mail', or 'Tools' section depending on configuration
    Affected if The GPG key management module is present and accessible to users
  3. Verify affected pages exist
    Navigate to or enumerate URLs for: public key details, export key, sign key, send to key server, and fetch from key server pages within the GPG module
    Affected if Any of these five pages are accessible in the installed Usermin instance
  4. Check key comment field presence
    Access the GPG key management pages and locate the 'key comment' input field when creating or editing GPG keys
    Affected if The key comment input field exists and accepts user-supplied text

If Usermin version 2.000 is running AND the GPG key management module with the key comment field is accessible, the environment is vulnerable to stored XSS via the key comment parameter.

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

Implement proper input validation and context-aware output encoding for the key comment parameter across all affected pages to prevent XSS execution.

Fix this in Usermin 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
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2023-41161 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

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-2023-41161 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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