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Embedded browser choose wrong http version

Peter | Last updated: Apr 19, 2022 10:44AM UTC

The website I am testing does not support HTTP/2. When I send a request with the embedded browser then I get a "505 HTTP Version Not Supported" When I correct the HTTP version to HTTP/1 in the repeater then the response in burp is oke. Is there a way to fix that the embedded browser choose the wrong http version?

Liam, PortSwigger Agent | Last updated: Apr 19, 2022 10:54AM UTC

You can force Burp to use HTTP/1 via Proxy > Options > Misc. That said, Burp should handle this automatically. Is the application you are testing public facing? If so, could we take a look, please?

Peter | Last updated: Apr 19, 2022 12:07PM UTC

Thanks. This helped! I'll send a mail to support to provide you with the url. Can't share it here but it is public facing.

Liam, PortSwigger Agent | Last updated: Apr 19, 2022 02:01PM UTC