{"id":"CVE-2020-35927","aliases":["EUVD-2021-1766","GHSA-j42v-6wpm-r847","RUSTSEC-2020-0090"],"status":"published","title":"Data races in thex","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00313,"percentile":0.24564,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-662"],"published":"2020-12-08T12:00:00Z","modified":"2026-06-17T03:14:37Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"thex","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.1.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"thex","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.1.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"thex","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"thex_project","product":"thex"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0090.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35927","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j42v-6wpm-r847"},{"url":"https://crates.io/crates/thex","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-35927","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","status":"published","published":"2020-12-31T08:16:17Z","modified":"2024-08-04T17:16:13.233Z","updated_at":"2026-11-02T14:35:57.975444Z"}],"euvd":[{"id":"EUVD-2021-1766","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","status":"published","published":"2020-12-31T08:16:17Z","modified":"2024-08-04T17:16:13Z","updated_at":"2026-11-03T03:07:04.595509Z"}],"ghsa":[{"id":"GHSA-j42v-6wpm-r847","title":"Data races in thex","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","status":"published","published":"2021-08-25T20:50:26Z","modified":"2023-01-09T05:05:35Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-662"],"updated_at":"2026-11-02T14:36:11.367194Z"}],"nvd":[{"id":"CVE-2020-35927","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","status":"published","published":"2020-12-31T09:15:16.443Z","modified":"2026-06-17T03:14:37.343Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:28.340168Z"}],"osv":[{"id":"GHSA-j42v-6wpm-r847","title":"Data races in thex","description":"An issue was discovered in the thex crate through 2020-12-08 for Rust. Thex\u003cT\u003e allows cross-thread data races of non-Send types.","status":"published","published":"2021-08-25T20:50:26Z","modified":"2023-11-08T04:03:39.830805Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-662"],"updated_at":"2026-11-02T15:46:49.977351Z"},{"id":"RUSTSEC-2020-0090","title":"Thex\u003cT\u003e allows data races of non-Send types across threads","description":"`thex::Thex\u003cT\u003e` implements `Sync` for all types `T`. However, it is missing a\nbound for `T: Send`.\n\nThis allows non-Send types such as `Rc` to be sent across thread boundaries\nwhich can trigger undefined behavior and memory corruption.","status":"published","published":"2020-12-08T12:00:00Z","modified":"2023-11-08T04:03:39.830805Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}