{"cve":"CVE-2020-35876","nvd":{"published":"2020-12-31T10:15:15.863","modified":"2026-06-17T03:14:30.930","status":"Modified","description":"An issue was discovered in the rio crate through 2020-05-11 for Rust. A struct can be leaked, allowing attackers to obtain sensitive information, cause a use-after-free, or cause a data race.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-416","CWE-772"],"references":["https://rustsec.org/advisories/RUSTSEC-2020-0021.html","https://rustsec.org/advisories/RUSTSEC-2020-0021.html"],"products":["rio_project:rio"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-35876","score":0.0156,"percentile":0.75236,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-8rc5-mr4f-m243","url":"https://osv.dev/vulnerability/GHSA-8rc5-mr4f-m243","summary":"Use after free in rio","modified":"2023-11-08T04:03:37.009424Z","packages":[{"ecosystem":"crates.io","name":"rio","purl":"pkg:cargo/rio","ranges":["<=0.9.4"],"fixed":[]}]},{"id":"RUSTSEC-2020-0021","url":"https://osv.dev/vulnerability/RUSTSEC-2020-0021","summary":"rio allows a use-after-free buffer access when a future is leaked","modified":"2023-11-08T04:03:37.009424Z","packages":[{"ecosystem":"crates.io","name":"rio","purl":"pkg:cargo/rio","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."]}