{"cve":"CVE-2020-36444","nvd":{"published":"2021-08-08T06:15:07.277","modified":"2026-06-17T03:15:30.320","status":"Modified","description":"An issue was discovered in the async-coap crate through 2020-12-08 for Rust. Send and Sync are implemented for ArcGuard<RC, T> without trait bounds on RC.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-362"],"references":["https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/async-coap/RUSTSEC-2020-0124.md","https://rustsec.org/advisories/RUSTSEC-2020-0124.html","https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/async-coap/RUSTSEC-2020-0124.md","https://rustsec.org/advisories/RUSTSEC-2020-0124.html"],"products":["async-coap_project:async-coap"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2020-36444","score":0.00766,"percentile":0.55483,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9j8q-m9x5-9g6j","url":"https://osv.dev/vulnerability/GHSA-9j8q-m9x5-9g6j","summary":"Data races in async-coap","modified":"2023-11-08T04:03:45.205946Z","packages":[{"ecosystem":"crates.io","name":"async-coap","purl":"pkg:cargo/async-coap","ranges":["<=0.1.0"],"fixed":[]}]},{"id":"RUSTSEC-2020-0124","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0124","summary":"ArcGuard's Send and Sync should have bounds on RC","modified":"2023-11-08T04:03:45.205946Z","packages":[{"ecosystem":"crates.io","name":"async-coap","purl":"pkg:cargo/async-coap","ranges":[">=0.0.0-0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}