{"cve":"CVE-2020-35906","nvd":{"published":"2020-12-31T09:15:15.177","modified":"2026-06-17T03:14:34.740","status":"Analyzed","description":"An issue was discovered in the futures-task crate before 0.3.6 for Rust. futures_task::waker may cause a use-after-free in a non-static type situation.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://rustsec.org/advisories/RUSTSEC-2020-0060.html","https://rustsec.org/advisories/RUSTSEC-2020-0060.html"],"products":["rust-lang:futures-task"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35906","score":0.00499,"percentile":0.42824,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r93v-9p5q-vhpf","url":"https://osv.dev/vulnerability/GHSA-r93v-9p5q-vhpf","summary":"futures_task::waker may cause a use-after-free if used on a type that isn't 'static","modified":"2025-10-30T19:53:41Z","packages":[{"ecosystem":"crates.io","name":"futures-task","purl":"pkg:cargo/futures-task","ranges":[">=0.2.1 <0.3.6"],"fixed":["0.3.6"]}]},{"id":"RUSTSEC-2020-0060","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0060","summary":"futures_task::waker may cause a use-after-free if used on a type that isn't 'static","modified":"2023-11-08T04:03:38.611050Z","packages":[{"ecosystem":"crates.io","name":"futures-task","purl":"pkg:cargo/futures-task","ranges":[">=0.2.2-0 <0.3.6"],"fixed":["0.3.6"]}]}],"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."]}