{"id":"CVE-2020-36450","aliases":["EUVD-2021-1785","GHSA-jwph-qp5h-f9wj","RUSTSEC-2020-0130"],"status":"published","title":"Data races in bunch","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. There are unconditional implementations of Send and Sync for Bunch\u003cT\u003e.","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":0.01249,"percentile":0.69756,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362","CWE-77"],"published":"2020-11-12T12:00:00Z","modified":"2026-06-17T03:15:31Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"bunch","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.1.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"bunch","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.1.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"bunch","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"bunch_project","product":"bunch"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0130.html","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/bunch/RUSTSEC-2020-0130.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36450","tags":["advisory"]},{"url":"https://github.com/krl/bunch/issues/1","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-jwph-qp5h-f9wj"},{"url":"https://github.com/krl/bunch","tags":["package"]},{"url":"https://crates.io/crates/bunch","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-36450","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. There are unconditional implementations of Send and Sync for Bunch\u003cT\u003e.","status":"published","published":"2021-08-08T05:15:34Z","modified":"2024-08-04T17:30:08.094Z","updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2021-1785","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. There are unconditional implementations of Send and Sync for Bunch\u003cT\u003e.","status":"published","published":"2021-08-08T05:15:34Z","modified":"2024-08-04T17:30:08Z","updated_at":"2026-11-03T03:07:03.010139Z"}],"ghsa":[{"id":"GHSA-jwph-qp5h-f9wj","title":"Data races in bunch","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. \nAffected versions of this crate unconditionally implements `Send`/`Sync` for `Bunch\u003cT\u003e`.\nThis allows users to insert `T: !Sync` to `Bunch\u003cT\u003e`. It is possible to create a data race to a `T: !Sync` by invoking the `Bunch::get()` API (which returns `\u0026T`) from multiple threads. It is also possible to send `T: !Send` to other threads by inserting `T` inside `Bunch\u003cT\u003e` and sending `Bunch\u003cT\u003e` to another thread, allowing to create a data race by inserting types like `T = Rc\u003c_\u003e`.\n\nSuch data races can lead to memory corruption.","status":"published","published":"2021-08-25T20:59:18Z","modified":"2023-02-01T05:06:12Z","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-77","CWE-362"],"updated_at":"2026-11-02T14:36:38.281533Z"}],"nvd":[{"id":"CVE-2020-36450","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. There are unconditional implementations of Send and Sync for Bunch\u003cT\u003e.","status":"published","published":"2021-08-08T06:15:07.51Z","modified":"2026-06-17T03:15:31.08Z","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-jwph-qp5h-f9wj","title":"Data races in bunch","description":"An issue was discovered in the bunch crate through 2020-11-12 for Rust. \nAffected versions of this crate unconditionally implements `Send`/`Sync` for `Bunch\u003cT\u003e`.\nThis allows users to insert `T: !Sync` to `Bunch\u003cT\u003e`. It is possible to create a data race to a `T: !Sync` by invoking the `Bunch::get()` API (which returns `\u0026T`) from multiple threads. It is also possible to send `T: !Send` to other threads by inserting `T` inside `Bunch\u003cT\u003e` and sending `Bunch\u003cT\u003e` to another thread, allowing to create a data race by inserting types like `T = Rc\u003c_\u003e`.\n\nSuch data races can lead to memory corruption.","status":"published","published":"2021-08-25T20:59:18Z","modified":"2023-11-08T04:03:45.582098Z","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":"2026-11-02T15:46:51.10002Z"},{"id":"RUSTSEC-2020-0130","title":"Bunch\u003cT\u003e unconditionally implements Send/Sync","description":"Affected versions of this crate unconditionally implements `Send`/`Sync` for `Bunch\u003cT\u003e`.\nThis allows users to insert `T: !Sync` to `Bunch\u003cT\u003e`. It is possible to create a data race to a `T: !Sync` by invoking the `Bunch::get()` API (which returns `\u0026T`) from multiple threads. It is also possible to send `T: !Send` to other threads by inserting `T` inside `Bunch\u003cT\u003e` and sending `Bunch\u003cT\u003e` to another thread, allowing to create a data race by inserting types like `T = Rc\u003c_\u003e`.\n\nSuch data races can lead to memory corruption.","status":"published","published":"2020-11-12T12:00:00Z","modified":"2023-11-08T04:03:45.582098Z","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"}]}}