{"action":"Upgrade hyper to 0.12.36 or later.","affected":[{"fixed":"0.12.36","introduced":"0.12.0"},{"fixed":"0.13.10","introduced":"0.13.0-0"},{"fixed":"0.14.3","introduced":"0.14.0-0"}],"component":"hyper","cve_ids":["CVE-2021-21299"],"ecosystem":"crates.io","epss":0.04789,"exploited":false,"fixed_versions":["0.12.36","0.13.10","0.14.3"],"ghsa_id":"GHSA-6hfq-h8hq-87mf","id":"tcs_01M5KF6RD32N0A4ZJQ3V21E02W","modified_at":"2026-10-12T18:00:04.410731844Z","published_at":"2021-02-05T12:00:00Z","references":["https://osv.dev/vulnerability/RUSTSEC-2021-0020","https://crates.io/crates/hyper","https://rustsec.org/advisories/RUSTSEC-2021-0020.html","https://github.com/hyperium/hyper/commit/8f93123efef5c1361086688fe4f34c83c89cec02"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"RUSTSEC-2021-0020","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0020"}],"summary":"Multiple Transfer-Encoding headers misinterprets request payload"}