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CVE-2023-4596 is an arbitrary file upload vulnerability in the Forminator plugin for WordPress, affecting versions up to and including 1.24.6. The vulnerability exists in the upload_post_image() function, where file type validation is performed after the file has already been uploaded to the server. This allows unauthenticated attackers to upload arbitrary files, potentially including executable scripts, to the affected server.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a working exploit for CVE-2023-4596, a critical unauthenticated remote code execution vulnerability in the WordPress Forminator plugin (version 1.24.6 and below). The exploit is implemented in Python (exploit.py) and automates the process of uploading a malicious PHP file (webshell or reverse shell) to a vulnerable WordPress site. The script first extracts required nonce and form_id values from the target page, then crafts and uploads a PHP payload via a multipart/form-data POST request to the /wp-admin/admin-ajax.php endpoint. The uploaded file is placed in the /wp-content/uploads/{year}/{month}/ directory, and the script can trigger the payload to verify code execution or establish a reverse shell. The repository also includes checker scripts (checker.sh and checker.bat) to help administrators identify potentially malicious files in their WordPress uploads directory. The exploit requires only the full URL of a page with a Forminator file upload field and optionally an out-of-band (OOB) link for detection. The repository is well-documented, with a detailed README explaining usage, mitigation, and detection steps.
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