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CVE-2021-25094 affects the Tatsu WordPress plugin before version 3.3.12. The plugin's add_custom_font action is accessible without authentication and can be abused to upload a malicious ZIP archive. The archive is extracted under the WordPress uploads directory. An attacker can include a PHP web shell in the ZIP using a filename beginning with a dot, which bypasses the plugin's extension controls. Additionally, a race condition during ZIP extraction allows the uploaded PHP shell to remain on disk long enough to be requested and executed by the attacker. This results in unauthenticated remote code execution on the affected WordPress site.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module (wp_tatsu_rce.rb) that exploits CVE-2021-25094, an unauthenticated remote code execution vulnerability in the Tatsu WordPress plugin (versions <= 3.3.11). The exploit works by uploading a malicious ZIP file containing a PHP payload to the vulnerable WordPress site via the /wp-admin/admin-ajax.php endpoint. After successful upload, the payload is executed by sending a POST request to the location where the ZIP is extracted (/wp-content/uploads/typehub/custom/<uploaded_zip_name>/<payload_file>). The module also includes a check method to verify the presence and version of the Tatsu plugin by accessing its changelog. The exploit is weaponized, allowing the attacker to execute arbitrary PHP code (such as a reverse shell) on the target server without authentication. The code is written in Ruby and is designed to be used within the Metasploit framework.
This repository provides two Python exploit scripts (exploit-rce.py and exploit-race.py) targeting CVE-2021-25094, a pre-authentication remote code execution vulnerability in the Tatsu Builder WordPress plugin (<= 3.3.11). Both scripts automate the process of generating a ZIP archive containing an obfuscated PHP webshell, uploading it to the vulnerable WordPress site's /wp-admin/admin-ajax.php?action=add_custom_font endpoint, and then triggering the webshell to execute arbitrary OS commands. The exploit-rce.py script supports multiple shell techniques (php, htaccess, custom) and can auto-delete the shell after use for stealth. The exploit-race.py script leverages a race condition and spawns multiple threads to increase the likelihood of successful exploitation, particularly bypassing Wordfence protections. The repository is operational, providing a working exploit with customizable payloads and options for stealth and proxying. The main endpoints involved are the admin-ajax.php upload handler and the web-accessible shell location under /wp-content/uploads/typehub/custom/. The exploit is effective against unpatched WordPress sites running the vulnerable Tatsu Builder plugin.
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