{"id":"CVE-2020-36433","aliases":["EUVD-2021-1842","GHSA-qg24-8xj4-gj2h","RUSTSEC-2020-0035"],"status":"published","title":"Unaligned memory allocation in chunky","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00915,"percentile":0.6047,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-758"],"published":"2020-08-25T12:00:00Z","modified":"2026-06-17T03:15:28Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"chunky","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.3.7"}]}]},{"source":"osv","ecosystem":"crates.io","package":"chunky","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.3.7"}]}]},{"source":"osv","ecosystem":"crates.io","package":"chunky","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"aeplay","product":"chunky"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2020-0035.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web","advisory"]},{"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/chunky/RUSTSEC-2020-0035.md","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36433","tags":["advisory"]},{"url":"https://github.com/aeplay/chunky/issues/2","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-qg24-8xj4-gj2h"},{"url":"https://github.com/aeplay/chunky","tags":["package"]},{"url":"https://crates.io/crates/chunky","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-36433","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","status":"published","published":"2021-08-08T05:19:34Z","modified":"2024-08-04T17:30:08.041Z","updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2021-1842","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","status":"published","published":"2021-08-08T05:19:34Z","modified":"2024-08-04T17:30:08Z","updated_at":"2026-11-03T03:07:03.010139Z"}],"ghsa":[{"id":"GHSA-qg24-8xj4-gj2h","title":"Unaligned memory allocation in chunky","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","status":"published","published":"2021-08-25T20:58:13Z","modified":"2023-02-01T05:06:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-758"],"updated_at":"2026-11-02T14:36:38.281533Z"}],"nvd":[{"id":"CVE-2020-36433","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","status":"published","published":"2021-08-08T06:15:06.853Z","modified":"2026-06-17T03:15:28.917Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:44.292752Z"}],"osv":[{"id":"GHSA-qg24-8xj4-gj2h","title":"Unaligned memory allocation in chunky","description":"An issue was discovered in the chunky crate through 2020-08-25 for Rust. The Chunk API does not honor an alignment requirement.","status":"published","published":"2021-08-25T20:58:13Z","modified":"2023-11-08T04:03:44.53619Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-758"],"updated_at":"2026-11-02T15:46:54.40888Z"},{"id":"RUSTSEC-2020-0035","title":"Chunk API does not respect align requirement","description":"Chunk API does not respect the align requirement of types. Unaligned reference can be created with the API, which is an undefined behavior.","status":"published","published":"2020-08-25T12:00:00Z","modified":"2023-11-08T04:03:44.53619Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}