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Getting '505 HTTP Version Not Supported' in burp scanner

jithin | Last updated: Oct 24, 2024 04:26AM UTC

While running burp scans , all my requests are failing with '505 HTTP Version Not Supported' response. I'm not able to find settings where i can tell burp scanner to use HTTP 1.1 . Incase of repeater i found this option under 'Repeater --> Alllow HTTP/2 ALPN override' and it works with repeater. Where should i change the setting incase of burp scanner ? I did try ' settings --> Network --> HTTp --> unchecked the default to HTTP/2 if the server supports it' option but that did not help.

Dominyque, PortSwigger Agent | Last updated: Oct 25, 2024 06:29AM UTC

Jithin, You would also need to disable HTTP/2 support from the Proxy Listener (Settings> Tools> Proxy) as well as from the HTTP Network settings as you have done. Please let me know if that helps.

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