{"id":"CVE-2020-36456","aliases":["EUVD-2021-1516","GHSA-2r6q-6c8c-g762","RUSTSEC-2020-0136"],"status":"published","title":"Data races in toolshed","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01098,"percentile":0.6606,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362","CWE-77"],"published":"2020-11-15T12:00:00Z","modified":"2026-06-17T03:15:31Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"toolshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.8.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"toolshed","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.8.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"toolshed","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"toolshed_project","product":"toolshed"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0136.html","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/toolshed/RUSTSEC-2020-0136.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36456","tags":["advisory"]},{"url":"https://github.com/ratel-rust/toolshed/issues/12","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-2r6q-6c8c-g762"},{"url":"https://github.com/ratel-rust/toolshed","tags":["package"]},{"url":"https://crates.io/crates/toolshed","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-36456","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","status":"published","published":"2021-08-08T05:14:31Z","modified":"2024-08-04T17:30:07.344Z","updated_at":"2026-11-02T14:35:54.80237Z"}],"euvd":[{"id":"EUVD-2021-1516","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","status":"published","published":"2021-08-08T05:14:31Z","modified":"2024-08-04T17:30:07Z","updated_at":"2026-11-03T03:07:03.010139Z"}],"ghsa":[{"id":"GHSA-2r6q-6c8c-g762","title":"Data races in toolshed","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","status":"published","published":"2021-08-25T20:58:03Z","modified":"2023-02-01T05:05:52Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-77","CWE-362"],"updated_at":"2026-11-02T14:36:35.781528Z"}],"nvd":[{"id":"CVE-2020-36456","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","status":"published","published":"2021-08-08T06:15:07.753Z","modified":"2026-06-17T03:15:31.84Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-77"],"updated_at":"2026-11-02T14:06:44.292752Z"}],"osv":[{"id":"GHSA-2r6q-6c8c-g762","title":"Data races in toolshed","description":"An issue was discovered in the toolshed crate through 2020-11-15 for Rust. In CopyCell\u003cT\u003e, the Send trait lacks bounds on the contained type.","status":"published","published":"2021-08-25T20:58:03Z","modified":"2023-11-08T04:03:45.949817Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-362","CWE-77"],"updated_at":"2026-11-02T15:46:34.700741Z"},{"id":"RUSTSEC-2020-0136","title":"CopyCell lacks bounds on its Send trait allowing for data races","description":"`CopyCell\u003cT\u003e` is a `Cell`-like type that is implemented for any type `T` that\nis `Copy`able. It's `Send` trait has no bounds on the contained type.\n\nAs not all `Copy`able types are thread safe, for example non-mutable references\nimplement the `Copy` trait, it is possible to send references to types with\ninterior mutability such as `Cell` across threads and cause data races.","status":"published","published":"2020-11-15T12:00:00Z","modified":"2023-11-08T04:03:45.949817Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}