{"cve":"CVE-2020-35905","nvd":{"published":"2020-12-31T09:15:15.130","modified":"2026-06-17T03:14:34.617","status":"Modified","description":"An issue was discovered in the futures-util crate before 0.3.7 for Rust. MutexGuard::map can cause a data race for certain closure situations (in safe code).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":4.7},"cwes":["CWE-362"],"references":["https://rustsec.org/advisories/RUSTSEC-2020-0059.html","https://rustsec.org/advisories/RUSTSEC-2020-0059.html"],"products":["rust-lang:future-utils"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35905","score":0.00264,"percentile":0.18352,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rh4w-94hh-9943","url":"https://osv.dev/vulnerability/GHSA-rh4w-94hh-9943","summary":"MutexGuard::map can cause a data race in safe code","modified":"2023-11-08T04:03:38.548968Z","packages":[{"ecosystem":"crates.io","name":"futures-util","purl":"pkg:cargo/futures-util","ranges":[">=0.3.2 <0.3.7"],"fixed":["0.3.7"]}]},{"id":"RUSTSEC-2020-0059","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0059","summary":"MutexGuard::map can cause a data race in safe code","modified":"2023-11-08T04:03:38.548968Z","packages":[{"ecosystem":"crates.io","name":"futures-util","purl":"pkg:cargo/futures-util","ranges":[">=0.3.2 <0.3.7"],"fixed":["0.3.7"]}]}],"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."]}