{"cve":"CVE-2020-36458","nvd":{"published":"2021-08-08T06:15:07.837","modified":"2026-06-17T03:15:32.103","status":"Modified","description":"An issue was discovered in the lexer crate through 2020-11-10 for Rust. For ReaderResult<T, E>, there is an implementation of Sync with a trait bound of T: Send, E: Send.","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/lexer/RUSTSEC-2020-0138.md","https://rustsec.org/advisories/RUSTSEC-2020-0138.html","https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lexer/RUSTSEC-2020-0138.md","https://rustsec.org/advisories/RUSTSEC-2020-0138.html"],"products":["lexer_project:lexer"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2020-36458","score":0.00833,"percentile":0.57646,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f997-8gxg-r354","url":"https://osv.dev/vulnerability/GHSA-f997-8gxg-r354","summary":"Data races in lexer","modified":"2023-11-08T04:03:46.074313Z","packages":[{"ecosystem":"crates.io","name":"lexer","purl":"pkg:cargo/lexer","ranges":["<=0.1.16"],"fixed":[]}]},{"id":"RUSTSEC-2020-0138","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0138","summary":"ReaderResult should be bounded by Sync","modified":"2023-11-08T04:03:46.074313Z","packages":[{"ecosystem":"crates.io","name":"lexer","purl":"pkg:cargo/lexer","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."]}