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HTTP Request Smuggler

This is an extension for Burp Suite designed to help you launch HTTP Request Smuggling attacks. It supports scanning for Request Smuggling vulnerabilities, and also aids exploitation by handling cumbersome offset-tweaking for you.


Right click on a request and click 'Launch Smuggle probe', then watch the extension's output pane. For more advanced use watch the video, and check out the documentation.


We've also released free online labs to practise against.

Author James Kettle
Version 2.02
Last updated 20 May 2022

You can install BApps directly within Burp, via the BApp Store feature in the Burp Extender tool. You can also download them from here, for offline installation into Burp.

You can view the source code for this BApp by visiting our GitHub page.
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Please note that extensions are written by third party users of Burp, and PortSwigger Web Security makes no warranty about their quality or usefulness for any particular purpose.

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