Unrestricted File UploadWeakness · CWE-434

CVE-2025-31002

CRITICAL · 9.1 CVSS v3.1 Published 2025-04-09
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
97/100
Remediation priority · Urgent
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
Unrestricted Upload of File with Dangerous Type vulnerability in Bogdan Bendziukov Squeeze squeeze allows Using Malicious Files.This issue affects Squeeze: from n/a through <= 1.6.

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

The Squeeze application has an unrestricted file upload vulnerability allowing attackers to upload dangerous file types (e.g., executable scripts, web shells) without proper validation of file content or type. This could lead to remote code execution if the uploaded malicious file is subsequently accessed and executed by the server.

MitigationImplement strict whitelist-based file type validation using both magic byte analysis and extension checking, store uploads outside the web root, and disable script execution in upload directories.

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
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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. Identify Squeeze application installation
    Search for Squeeze application files in the web server document root, common paths include /var/www/html/squeeze, /opt/squeeze, or the application's installation directory. Check for the presence of squeeze.php, squeeze/index.php, or similar application entry points.
    Affected if The Squeeze application is found installed on the system and the file upload feature is accessible to users.
  2. Locate upload functionality
    Examine the application source code for file upload forms and handling code. Search for 'enctype=multipart/form-data', 'move_uploaded_file', or '$_FILES' in PHP-based Squeeze installations.
    Affected if File upload functionality exists and is accessible without authentication or with user-level access.
  3. Check file type validation implementation
    Review the upload handling code for validation logic. Look for whitelist-based checks on file extensions, MIME type verification, and magic byte/header validation of uploaded file content.
    Affected if No server-side validation exists, or validation relies solely on client-side checks, file extension allowlists are missing, or content type is not verified against actual file headers.
  4. Inspect upload storage location
    Determine where uploaded files are stored by reviewing the upload handler code. Check if the upload directory path is within the web server document root or accessible via URL.
    Affected if Uploaded files are stored within the web root or in a location accessible via HTTP/HTTPS requests, allowing direct access to uploaded content.
  5. Verify script execution settings
    Check web server configuration (Apache .htaccess, Nginx config) for the upload directory. Look for directives like 'php_flag engine off', 'RemoveHandler .php', or 'nginx location' blocks that prevent script execution.
    Affected if Script execution is not disabled in the upload directory, allowing uploaded PHP, ASP, JSP, or other executable files to be run if accessed.

The environment is affected if the Squeeze application is installed with accessible file upload functionality that lacks proper server-side validation, stores files in web-accessible locations, and does not disable script execution in upload directories.

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 strict whitelist-based file type validation using both magic byte analysis and extension checking, store uploads outside the web root, and disable script execution in upload directories.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
20.0 hours of engineering $3,480
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-31002 — 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-2025-31002 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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