Provide references for CVE-2021-21299.
Where can I find more information about CVE-2021-21299?
References are available at: https://portswigger.net/research/http-desync-attacks-request-smuggling-reborn, https://rustsec.org/advisories/RUSTSEC-2021-0020.html, https://github.com/hyperium/hyper/security/advisories/GHSA-6hfq-h8hq-87mf, https://crates.io/crates/hyper, https://github.com/hyperium/hyper/commit/8f93123efef5c1361086688fe4f34c83c89cec02.