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Unrestricted File UploadWeakness · CWE-434

CVE-2011-10041

CRITICAL · 9.3 CVSS v4.0 Published 2026-01-15
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
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
Uploadify WordPress plugin versions up to and including 1.0 contain an arbitrary file upload vulnerability in process_upload.php due to missing file type validation. An unauthenticated remote attacker can upload arbitrary files to the affected WordPress site, which may allow remote code execution by uploading executable content to a web-accessible location.

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 Uploadify WordPress plugin versions up to 1.0 lacks file type validation in process_upload.php, allowing unauthenticated remote attackers to upload arbitrary files to the server. Since uploaded files can be placed in web-accessible directories, attackers can achieve remote code execution by uploading executable PHP scripts or other malicious content.

MitigationImmediately disable or remove the vulnerable Uploadify plugin. If continued use is required, implement strict server-side file type validation based on file content (magic bytes) rather than extensions, store uploads outside web root, and rename files to prevent execution. Consider migrating to a maintained alternative or implementing a web application firewall rule as a temporary measure.

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
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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 the Uploadify plugin files
    Check the WordPress plugins directory (wp-content/plugins/) for a folder named 'uploadify' or similar. Also search for the file 'process_upload.php' in the plugins directory structure.
    Affected if The Uploadify plugin folder or process_upload.php file exists on the server
  2. Identify the installed version
    Open the main Uploadify plugin file (typically uploadify.php or similar) and look for a version comment or header line that states the version number.
    Affected if The version is 1.0 or any version up to and including 1.0 (no version number, or version <= 1.0)
  3. Verify process_upload.php is present and accessible
    Check for the existence of process_upload.php within the plugin folder. Attempt to access it directly via HTTP (e.g., https://yoursite.com/wp-content/plugins/uploadify/process_upload.php) to see if it responds.
    Affected if process_upload.php exists and is accessible via the web (returns any HTTP response)
  4. Confirm upload directory is web-accessible
    Review the plugin configuration or code to determine the upload path. Check if this path is within the public web root (typically /wp-content/uploads/ or similar).
    Affected if Uploaded files can be saved to a directory accessible via HTTP (web root)
  5. Check for unauthorized uploaded files
    Search the web-accessible upload directories for unexpected file extensions such as .php, .phtml, .php5, .js, or other executable extensions that were not intentionally uploaded by administrators.
    Affected if Unexpected executable or script files are found in the upload directories

You are affected if the Uploadify plugin version is 1.0 or earlier, process_upload.php exists and is web-accessible, and the upload directory is within the web root.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Immediately disable or remove the vulnerable Uploadify plugin. If continued use is required, implement strict server-side file type validation based on file content (magic bytes) rather than extensions, store uploads outside web root, and rename files to prevent execution. Consider migrating to a maintained alternative or implementing a web application firewall rule as a temporary measure.

Recommended fix High confidence

Replace with an actively maintained WordPress plugin (e.g., contemporary file upload plugins from the official WordPress repository)

  1. 1. Identify all instances of the Uploadify WordPress plugin on the affected site(s)
  2. 2. Remove the Uploadify plugin completely from the WordPress installation
  3. 3. Search the official WordPress plugin repository for an actively maintained file upload plugin alternative (such as WPForms, Gravity Forms, or similar)
  4. 4. Install the alternative plugin from the official WordPress repository
  5. 5. Reconfigure the new plugin with equivalent functionality to replace Uploadify
  6. 6. Verify that the process_upload.php file and related Uploadify files have been completely removed from the web server
  7. 7. Monitor the site for any indicators of compromise, as the vulnerability may have been exploited
Caveat The Uploadify plugin is likely abandoned; functionality will need to be replicated using an alternative plugin

Generated from the published advisory — verify against the referenced sources before acting.

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
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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

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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-2011-10041 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