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CVE-2021-24171CWE-434

WooCommerce Upload Files < 59.4 - Unauthenticated Arbitrary File Upload

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 1.9%
exploitation probability
1.9%top 22% of all CVEs
observed exploitation
nono source reports it
The WooCommerce Upload Files WordPress plugin before 59.4 ran a single sanitization pass to remove blocked extensions such as .php. It was possible to bypass this and upload a file with a PHP extension by embedding a "blocked" extension within another "blocked" extension in the "wcuf_file_name" parameter. It was also possible to perform a double extension attack and upload files to a different location via path traversal using the "wcuf_current_upload_session_id" parameter.