![]() ![]() In some cases, the act of uploading the file is in itself enough to cause damage. This could even include server-side script files that enable remote code execution. Failing to properly enforce restrictions on these could mean that even a basic image upload function can be used to upload arbitrary and potentially dangerous files instead. View all file upload labs What are file upload vulnerabilities?įile upload vulnerabilities are when a web server allows users to upload files to its filesystem without sufficiently validating things like their name, type, contents, or size. If you're already familiar with the basic concepts behind file upload vulnerabilities and just want to get practicing, you can access all of the labs in this topic from the link below. ![]()
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January 2023
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