Unrestricted File UploadWeakness · CWE-434

CVE-2018-25436

CRITICAL · 9.8 CVSS v3.1 Published 2026-06-15
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
Public exploit Remotely reachable 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
WordPress Plugin Baggage Freight Shipping Australia 0.1.0 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files by exploiting the upload-package.php endpoint. Attackers can submit POST requests with malicious file extensions to the upload handler, which moves files without validation to the plugin upload directory, enabling remote code execution.

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

The WordPress plugin Baggage Freight Shipping Australia 0.1.0 contains an unrestricted file upload vulnerability in the upload-package.php endpoint. Unauthenticated attackers can submit POST requests with malicious file extensions that are moved without validation to the plugin's upload directory, enabling remote code execution.

MitigationImmediately disable or remove the vulnerable plugin. If continued use is required, implement proper file type validation, add authentication checks, and store uploads outside the web-accessible directory.

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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. Locate the Baggage Freight Shipping Australia plugin
    Check the WordPress plugins directory (typically wp-content/plugins/) for a folder named 'baggage-freight-shipping-australia' or similar variant containing 'baggage' and 'freight'
    Affected if The plugin folder exists in the WordPress installation
  2. Verify the vulnerable file exists
    Look for upload-package.php inside the plugin directory
    Affected if The file upload-package.php exists in the plugin folder
  3. Confirm the plugin version
    Check the main plugin PHP file for the version header, typically found in the plugin comments at the top of the main file (often named baggage-freight-shipping-australia.php)
    Affected if The version is 0.1.0 or if the version cannot be determined but the plugin and vulnerable file both exist
  4. Check upload directory accessibility
    Inspect the plugin directory for an uploads or similar folder created by the plugin; verify if it is located within the web-accessible /wp-content/ directory
    Affected if The plugin creates and stores uploads within a web-accessible directory (wp-content/plugins/baggage-freight-shipping-australia/uploads/ or similar)

The environment is affected if the Baggage Freight Shipping Australia plugin is installed with upload-package.php present, regardless of version, since the vulnerability allows unauthenticated file uploads that could enable remote code execution.

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 disable or remove the vulnerable plugin. If continued use is required, implement proper file type validation, add authentication checks, and store uploads outside the web-accessible directory.

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-2018-25436 — 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-2018-25436 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