CVE-2026-92820
Received Received - Intake

Arbitrary File Read/Write/Delete in Ninja Forms File Uploads Plugin

Publication date: 2026-10-02

Last updated on: 2026-10-02

Assigner: Wordfence

Description
The Ninja Forms - File Uploads plugin for WordPress is vulnerable to arbitrary file operations in all versions up to, and including, 3.3.34 via the external (Amazon S3) upload flow. The plugin trusts an attacker-supplied file path from the form submission and stores it as the upload's file_path, which is then used without validation to attach a file to the form's notification email (arbitrary file read), to write fetched content (arbitrary file write, leading to remote code execution when the external store is configured), and in a scheduled deletion (arbitrary file deletion). This makes it possible for unauthenticated attackers to read, write, or delete arbitrary files on the server. Exploitation requires the site to use the plugin's External File Upload (Amazon S3) action; the read variant additionally requires a form Email action configured to attach the uploaded file.

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Meta Information

Published
2026-10-02
Last Modified
2026-10-02
Generated
2026-10-02
AI Q&A
2026-10-02
EPSS Evaluated
N/A
NVD
CVE-2026-92820
EUVD
EUVD-2026-91175

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ninja_forms file_uploads to 3.3.34 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

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Executive Summary

The Ninja Forms - File Uploads plugin for WordPress has a vulnerability in versions up to 3.3.34 that allows unauthenticated attackers to perform arbitrary file operations. The plugin trusts attacker-supplied file paths from form submissions without validation. This enables reading, writing, or deleting arbitrary files on the server. Exploitation requires the site to use the plugin's External File Upload (Amazon S3) action. The read variant also needs a form Email action configured to attach the uploaded file.

Detection Guidance

Check if the Ninja Forms - File Uploads plugin version is up to 3.3.34 or higher. Inspect server logs for unusual file operations or requests involving the plugin's external upload flow. Look for unauthorized file reads, writes, or deletions in system directories.

Impact Analysis

This vulnerability can lead to serious security issues. Attackers could read sensitive files on your server, including configuration files or databases. They could also write malicious files, potentially leading to remote code execution if external storage like Amazon S3 is configured. Additionally, attackers could delete critical files, causing system failures or data loss.

Compliance Impact

This vulnerability can severely impact compliance with GDPR and HIPAA. Unauthorized file access could lead to data breaches, exposing personal or protected health information. GDPR requires protecting personal data, and HIPAA mandates safeguarding health information. A breach could result in legal penalties, fines, and reputational damage for organizations.

Mitigation Strategies

Update the Ninja Forms - File Uploads plugin to the latest version immediately. Disable the External File Upload (Amazon S3) action if not required. Review and restrict file permissions on the server. Monitor for suspicious activity in file operations.

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