{"id":"CVE-2020-35906","aliases":["GHSA-r93v-9p5q-vhpf","RUSTSEC-2020-0060"],"url":"https://o3.security/vulnerability/CVE-2020-35906","summary":"futures_task::waker may cause a use-after-free if used on a type that isn't 'static","details":"Affected versions of the crate did not properly implement a 'static lifetime bound on the waker function. This resulted in a use-after-free if Waker::wake() is called after original data had been dropped.\n\nThe flaw was corrected by adding 'static lifetime bound to the data waker takes.","published":"2020-12-31T09:15:15.177Z","modified":"2026-10-24T10:30:47.372317912Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"crates.io","name":"futures-task","fixedVersion":"0.3.6"}],"fix":{"url":"https://github.com/rust-lang/futures-rs/pull/2206","label":"rust-lang/futures-rs#2206"},"references":[{"type":"FIX","url":"https://rustsec.org/advisories/RUSTSEC-2020-0060.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35906"},{"type":"WEB","url":"https://github.com/rust-lang/futures-rs/pull/2206"},{"type":"PACKAGE","url":"https://github.com/rust-lang/futures-rs"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:47.372317912Z"}}