{"id":"CVE-2020-36454","aliases":["EUVD-2021-1509","GHSA-29v7-3v4c-gf38","GHSA-xwxc-j97j-84gf","RUSTSEC-2020-0134"],"status":"published","title":"Data races in parc","description":"An issue was discovered in the parc crate through 2020-11-14 for Rust. LockWeak\u003cT\u003e has an unconditional implementation of Send without trait bounds on T.","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":0.00833,"percentile":0.5806,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-362"],"published":"2020-11-14T12:00:00Z","modified":"2026-06-17T03:15:31Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"parc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.0.1"}]}]},{"source":"ghsa","ecosystem":"crates.io","package":"parc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.0.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"parc","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.0.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"parc","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"1.0.1"}]}]},{"source":"osv","ecosystem":"crates.io","package":"parc","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"parc_project","product":"parc"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0134.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/parc/RUSTSEC-2020-0134.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36454","tags":["advisory"]},{"url":"https://github.com/hyyking/rustracts/pull/6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-29v7-3v4c-gf38"},{"url":"https://github.com/advisories/GHSA-xwxc-j97j-84gf"},{"url":"https://github.com/hyyking/rustracts/tree/master/parc","tags":["package"]},{"url":"https://crates.io/crates/parc","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-36454","description":"An issue was discovered in the parc crate through 2020-11-14 for Rust. LockWeak\u003cT\u003e has an unconditional implementation of Send without trait bounds on T.","status":"published","published":"2021-08-08T05:14:51Z","modified":"2024-08-04T17:30:08.305Z","updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2021-1509","description":"An issue was discovered in the parc crate through 2020-11-14 for Rust. LockWeak\u003cT\u003e has an unconditional implementation of Send without trait bounds on T.","status":"published","published":"2021-08-08T05:14:51Z","modified":"2024-08-04T17:30:08Z","updated_at":"2026-11-03T03:07:03.010139Z"}],"ghsa":[{"id":"GHSA-29v7-3v4c-gf38","title":"Data races in parc","description":"In the affected versions of this crate, LockWeak\u003cT\u003e unconditionally implemented Send with no trait bounds on T. LockWeak\u003cT\u003e doesn't own T and only provides \u0026T. This allows concurrent access to a non-Sync T, which can cause undefined behavior like data races.","status":"published","published":"2021-08-25T20:57:24Z","modified":"2023-06-13T20:11:12Z","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-119","CWE-362"],"updated_at":"2026-11-02T14:36:53.654352Z"},{"id":"GHSA-xwxc-j97j-84gf","title":"Race condition in Parc","description":"In the affected versions of this crate, `LockWeak\u003cT\u003e` unconditionally implemented `Send` with no trait bounds on `T`. `LockWeak\u003cT\u003e` doesn't own `T` and only provides `\u0026T`. This allows concurrent access to a non-Sync `T`, which can cause undefined behavior like data races.\n","status":"published","published":"2021-08-25T21:00:03Z","modified":"2023-06-13T20:35:52Z","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-362"],"updated_at":"2026-11-02T14:36:54.225318Z"}],"nvd":[{"id":"CVE-2020-36454","description":"An issue was discovered in the parc crate through 2020-11-14 for Rust. LockWeak\u003cT\u003e has an unconditional implementation of Send without trait bounds on T.","status":"published","published":"2021-08-08T06:15:07.67Z","modified":"2026-06-17T03:15:31.577Z","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-362"],"updated_at":"2026-11-02T14:06:44.292752Z"}],"osv":[{"id":"GHSA-29v7-3v4c-gf38","title":"Data races in parc","description":"In the affected versions of this crate, LockWeak\u003cT\u003e unconditionally implemented Send with no trait bounds on T. LockWeak\u003cT\u003e doesn't own T and only provides \u0026T. This allows concurrent access to a non-Sync T, which can cause undefined behavior like data races.","status":"published","published":"2021-08-25T20:57:24Z","modified":"2023-11-08T04:03:45.82755Z","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-119","CWE-362"],"updated_at":"2026-11-02T15:46:34.338541Z"},{"id":"GHSA-xwxc-j97j-84gf","title":"Race condition in Parc","description":"In the affected versions of this crate, `LockWeak\u003cT\u003e` unconditionally implemented `Send` with no trait bounds on `T`. `LockWeak\u003cT\u003e` doesn't own `T` and only provides `\u0026T`. This allows concurrent access to a non-Sync `T`, which can cause undefined behavior like data races.\n","status":"published","published":"2021-08-25T21:00:03Z","modified":"2023-11-08T04:03:45.82755Z","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"],"updated_at":"2026-11-02T15:47:00.604718Z"},{"id":"RUSTSEC-2020-0134","title":"`LockWeak\u003cT\u003e` allows to create data race to `T`.","description":"In the affected versions of this crate, `LockWeak\u003cT\u003e` unconditionally implemented `Send` with no trait bounds on `T`. `LockWeak\u003cT\u003e` doesn't own `T` and only provides `\u0026T`.\n\nThis allows concurrent access to a non-Sync `T`, which can cause undefined behavior like data races.","status":"published","published":"2020-11-14T12:00:00Z","modified":"2023-11-08T04:03:45.82755Z","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"}]}}