{"cve":"CVE-2021-38191","nvd":{"published":"2021-08-08T06:15:08.967","modified":"2026-06-17T04:01:43.753","status":"Modified","description":"An issue was discovered in the tokio crate before 1.8.1 for Rust. Upon a JoinHandle::abort, a Task may be dropped in the wrong thread.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":["CWE-362"],"references":["https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0072.md","https://rustsec.org/advisories/RUSTSEC-2021-0072.html","https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0072.md","https://rustsec.org/advisories/RUSTSEC-2021-0072.html"],"products":["tokio:tokio"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-38191","score":0.00833,"percentile":0.57666,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-2grh-hm3w-w7hv","url":"https://osv.dev/vulnerability/GHSA-2grh-hm3w-w7hv","summary":"Race condition in tokio","modified":"2023-11-08T04:06:25.982475Z","packages":[{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=1.8.0 <1.8.1"],"fixed":["1.8.1"]},{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=1.7.0 <1.7.2"],"fixed":["1.7.2"]},{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=1.6.0 <1.6.3"],"fixed":["1.6.3"]},{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=0.3.0 <1.5.1"],"fixed":["1.5.1"]}]},{"id":"RUSTSEC-2021-0072","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0072","summary":"Task dropped in wrong thread when aborting `LocalSet` task","modified":"2023-11-08T04:06:25.982475Z","packages":[{"ecosystem":"crates.io","name":"tokio","purl":"pkg:cargo/tokio","ranges":[">=0.3.0 <1.5.1",">=1.6.0 <1.6.3",">=1.7.0 <1.7.2",">=1.8.0 <1.8.1"],"fixed":["1.5.1","1.6.3","1.7.2","1.8.1"]}]}],"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."]}