{"id":"UBUNTU-CVE-2020-35863","details":"An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.","modified":"2025-07-16T07:41:35.361448Z","published":"2020-12-31T10:15:00Z","withdrawn":"2025-07-18T16:46:15Z","upstream":["CVE-2020-35863"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-35863"},{"type":"REPORT","url":"https://rustsec.org/advisories/RUSTSEC-2020-0008.html"},{"type":"REPORT","url":"https://github.com/hyperium/hyper/issues/1925"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-35863"}],"affected":[{"package":{"name":"rust-hyper","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/rust-hyper@0.12.35-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.35-1"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"librust-hyper+default-dev","binary_version":"0.12.35-1"},{"binary_version":"0.12.35-1","binary_name":"librust-hyper+futures-cpupool-dev"},{"binary_name":"librust-hyper+net2-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper+runtime-dev","binary_version":"0.12.35-1"},{"binary_version":"0.12.35-1","binary_name":"librust-hyper+tokio-dev"},{"binary_name":"librust-hyper+tokio-executor-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper+tokio-reactor-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper+tokio-tcp-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper+tokio-threadpool-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper+tokio-timer-dev","binary_version":"0.12.35-1"},{"binary_name":"librust-hyper-dev","binary_version":"0.12.35-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-35863.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}