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Missing AuthenticationWeakness · CWE-306

CVE-2025-30040

CRITICAL · 9.0 CVSS v4.0 Published 2025-08-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
95/100
Remediation priority · Urgent
No privileges 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
The vulnerability allows unauthenticated users to download a file containing session ID data by directly accessing the "/cgi-bin/CliniNET.prd/utils/userlogxls.pl" endpoint.

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

An unauthenticated file disclosure vulnerability exists in the CGI script /cgi-bin/CliniNET.prd/utils/userlogxls.pl. The endpoint allows any unauthenticated user to directly request and download a file containing session ID data, enabling session hijacking attacks.

MitigationImmediately restrict or disable access to the vulnerable CGI script. Implement proper authentication and authorization checks on the endpoint, or remove the script if unnecessary. Review and invalidate all active sessions.

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
Adjacent
Complexity
Low
Privileges
None
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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. Locate CliniNET installation
    Search for CliniNET installation directories on the system. Common paths include /var/www/cgi-bin/, /usr/local/apache/cgi-bin/, or application-specific directories. Look for the CliniNET.prd directory structure.
    Affected if CliniNET.prd directory exists on the server
  2. Identify the vulnerable CGI script
    Check if the file /cgi-bin/CliniNET.prd/utils/userlogxls.pl exists. Search in your web server's cgi-bin directory and any application-specific cgi directories.
    Affected if The file userlogxls.pl exists in the expected path
  3. Verify web server access control
    Review your web server configuration (Apache, IIS, or other) to determine if the /cgi-bin/CliniNET.prd/utils/ path requires authentication. Check for any Allow/Deny directives, require statements, or authentication rules.
    Affected if The CGI script is accessible without any authentication requirement
  4. Test unauthenticated access
    If permitted by policy, attempt a GET request to the endpoint using curl or similar tool: curl http://yourserver/cgi-bin/CliniNET.prd/utils/userlogxls.pl
    Affected if The script returns data or a valid response without providing credentials
  5. Check for session data exposure
    If the script responds, examine the output for session IDs, user identifiers, or authentication tokens that could be used for session hijacking.
    Affected if The response contains session identifiers or user session data

You are affected if the CGI script exists and is accessible without authentication, allowing unauthenticated users to download session data.

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

Immediately restrict or disable access to the vulnerable CGI script. Implement proper authentication and authorization checks on the endpoint, or remove the script if unnecessary. Review and invalidate all active sessions.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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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-2025-30040 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
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