{"cve":"CVE-2020-35875","nvd":{"published":"2020-12-31T10:15:15.817","modified":"2026-06-17T03:14:30.803","status":"Modified","description":"An issue was discovered in the tokio-rustls crate before 0.13.1 for Rust. Excessive memory usage may occur when data arrives quickly.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://rustsec.org/advisories/RUSTSEC-2020-0019.html","https://rustsec.org/advisories/RUSTSEC-2020-0019.html"],"products":["tokio:tokio-rustls"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35875","score":0.01352,"percentile":0.71558,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2jfv-g3fh-xq3v","url":"https://osv.dev/vulnerability/GHSA-2jfv-g3fh-xq3v","summary":"Excessive memory usage in tokio-rustls","modified":"2023-11-08T04:03:36.949759Z","packages":[{"ecosystem":"crates.io","name":"tokio-rustls","purl":"pkg:cargo/tokio-rustls","ranges":[">=0.12.0 <0.12.3"],"fixed":["0.12.3"]},{"ecosystem":"crates.io","name":"tokio-rustls","purl":"pkg:cargo/tokio-rustls","ranges":[">=0.13.0 <0.13.1"],"fixed":["0.13.1"]}]},{"id":"RUSTSEC-2020-0019","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0019","summary":"tokio-rustls reads may cause excessive memory usage","modified":"2023-11-08T04:03:36.949759Z","packages":[{"ecosystem":"crates.io","name":"tokio-rustls","purl":"pkg:cargo/tokio-rustls","ranges":[">=0.12.0 <0.12.3",">=0.13.0 <0.13.1"],"fixed":["0.12.3","0.13.1"]}]}],"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."]}