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<p class="MsoNormal" style="background:white;vertical-align:baseline"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#232629;mso-fareast-language:EN-GB">Hi everyone,</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white;vertical-align:baseline"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#232629;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;background:white;mso-fareast-language:EN-GB">I'm a new NGINX user and I want to understand what NGINX reverse proxy users are doing to mitigate HTTP request smuggling
vulnerability. I understand that NGINX does not support sending HTTP/2 requests upstream.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB">Since the best way to prevent HTTP Request Smuggling is by sending HTTP/2 requests end to end. I believe NGINX
when used as a reverse proxy could expose my backend server to HTTP request smuggling when it converts incoming HTTP/2 requests to HTTP/1.1 before sending it upstream.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB">Apart from the web application firewall (WAF) from NGINX App Protect, is there any other solution to tackle
this vulnerability? I am relatively new to NGINX and reverse proxies, if NGINX or its users does have an alternate solution, please do share.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white;vertical-align:baseline"><span style="font-size:11.5pt;font-family:"inherit",serif;color:#232629;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white;vertical-align:baseline"><span style="font-size:12.0pt;font-family:"inherit",serif;color:#222222;mso-fareast-language:EN-GB">Thank you.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB">Regards,</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#222222;mso-fareast-language:EN-GB">Sai Vishnu Soudri </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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