Unrestricted File UploadWeakness · CWE-434

CVE-2024-34411

CRITICAL · 9.9 CVSS v3.1 Published 2024-05-14
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
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 Thomas Scholl canvasio3D Light.This issue affects canvasio3D Light: from n/a through 2.5.0.

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

Unrestricted file upload vulnerability in canvasio3D Light WordPress plugin versions up to 2.5.0 allows attackers to upload dangerous file types (e.g., PHP shells, executable scripts) without proper validation, potentially leading to remote code execution.

MitigationImplement strict allowlist-based file type validation including MIME type verification, extension checking, and file content (magic bytes) validation. Restrict uploads to safe file types only (e.g., images, videos) and store uploads outside webroot.

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

CVSS:3.1/AV:N/AC:L/PR:L/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. Confirm canvasio3D Light plugin is installed
    Log into WordPress admin dashboard and navigate to Plugins > Installed Plugins. Look for 'canvasio3D Light' in the list of active plugins.
    Affected if The plugin appears in the installed plugins list, regardless of activation status
  2. Identify the installed plugin version
    In the WordPress plugins list, click on the plugin name or view the plugin files. Locate the main PHP file (usually canvasio3d-light.php or similar) and check the version header comment at the top of the file.
    Affected if The version number is 2.5.0 or lower (the vulnerability affects versions up to 2.5.0)
  3. Verify file upload functionality is accessible
    Check if the plugin exposes any file upload endpoints or functionality. This may include reviewing plugin settings pages, checking for upload forms, or reviewing AJAX actions related to uploads in the plugin code.
    Affected if The plugin has any file upload capability enabled or accessible on the site
  4. Inspect upload directories for suspicious files
    Check the wp-content/uploads directory (and any custom upload paths configured) for unexpected PHP files, scripts, or executable files that should not be present in upload folders.
    Affected if Any PHP files, shell scripts, or other executable file types are found in upload directories (legitimate uploads should only be images, videos, or documents)
  5. Review access logs for upload activity
    Examine web server access logs (Apache/Nginx) for POST requests to the plugin's upload handlers or unusual file upload patterns pointing to the canvasio3D plugin.
    Affected if Evidence of file upload requests to canvasio3D-related endpoints, especially those uploading files with executable extensions

If the canvasio3D Light plugin versions 2.5.0 or lower is installed and has upload functionality accessible, the environment is likely affected by this unrestricted file upload vulnerability.

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 allowlist-based file type validation including MIME type verification, extension checking, and file content (magic bytes) validation. Restrict uploads to safe file types only (e.g., images, videos) and store uploads outside webroot.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-34411 — 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-2024-34411 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