{"id":"CVE-2020-35865","aliases":["GHSA-q948-x8rf-888m","RUSTSEC-2020-0012"],"url":"https://o3.security/vulnerability/CVE-2020-35865","summary":"os_str_bytes relies on undefined behavior of `char::from_u32_unchecked`","details":"An issue was discovered in the os_str_bytes crate before 2.0.0 for Rust. It has false expectations about char::from_u32_unchecked behavior.","published":"2020-12-31T10:15:15.223Z","modified":"2026-07-09T00:13:50.268179Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"os_str_bytes","fixedVersion":"2.0.0"}],"fix":null,"references":[{"type":"FIX","url":"https://rustsec.org/advisories/RUSTSEC-2020-0012.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:13:50.268179Z"}}