Unrestricted File UploadWeakness · CWE-434

CVE-2024-49257

CRITICAL · 10.0 CVSS v3.1 Published 2024-10-16
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 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
Unrestricted Upload of File with Dangerous Type vulnerability in Denis Azz Anonim Posting azz-anonim-posting allows Upload a Web Shell to a Web Server.This issue affects Azz Anonim Posting: from n/a through <= 0.9.

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 Azz Anonim Posting WordPress plugin has an unrestricted file upload vulnerability allowing attackers to upload executable files (web shells) directly to the web server, enabling remote code execution. The plugin fails to validate file types or restrict dangerous extensions during the upload process.

MitigationImplement strict file type validation using a whitelist approach, store uploads outside the web root or in non-executable directories, and rename uploaded files to prevent direct execution of uploaded content.

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
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 plugin installation
    Check if the 'azz-anonim-posting' directory exists in wp-content/plugins/ on the WordPress server
    Affected if The plugin directory is present on the server
  2. Identify installed plugin version
    Open the main plugin PHP file (usually azz-anonim-posting.php) in the plugin directory and locate the Version header in the plugin comment block, or check the readme.txt file for the version number
    Affected if The installed version matches or falls within the range of affected versions (compare against known vulnerable versions)
  3. Locate upload functionality
    Search the plugin files for upload-related code: look for functions handling $_FILES, 'wp_upload_bits', 'wp_handle_upload', or form endpoints that accept file uploads
    Affected if The plugin contains file upload handling code and the upload feature is accessible
  4. Verify file type validation exists
    Examine the upload handling code for validation logic: look for checks on file extensions (e.g., php, phtml, exe), MIME type validation, or whitelist-based filtering before processing uploads
    Affected if No file type/extension validation is present, or the validation can be bypassed (allows php, phtml, or other executable extensions)
  5. Inspect upload directory
    Check the wp-content/uploads/ directory and any custom upload paths defined by the plugin for unexpected .php, .phtml, or other executable files that were not intentionally uploaded by administrators
    Affected if Suspicious executable files are found in upload directories that should not contain scripts

The environment is affected if the Azz Anonim Posting plugin is installed with a vulnerable version and its upload feature is accessible without proper file type restrictions.

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 file type validation using a whitelist approach, store uploads outside the web root or in non-executable directories, and rename uploaded files to prevent direct execution of uploaded content.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-49257 — 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-2024-49257 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