{"cve":"CVE-2021-30454","nvd":{"published":"2021-04-07T22:15:15.117","modified":"2026-06-17T03:50:16.510","status":"Modified","description":"An issue was discovered in the outer_cgi crate before 0.2.1 for Rust. A user-provided Read instance receives an uninitialized memory buffer from KeyValueReader.","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-119"],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0051.html","https://rustsec.org/advisories/RUSTSEC-2021-0051.html"],"products":["outer_cgi_project:outer_cgi"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-30454","score":0.01139,"percentile":0.66616,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-6vmq-jh76-hq43","url":"https://osv.dev/vulnerability/GHSA-6vmq-jh76-hq43","summary":"Uninitialized memory access in outer_cgi","modified":"2023-11-08T04:05:46.033472Z","packages":[{"ecosystem":"crates.io","name":"outer_cgi","purl":"pkg:cargo/outer_cgi","ranges":["<0.2.1"],"fixed":["0.2.1"]}]},{"id":"RUSTSEC-2021-0051","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0051","summary":"KeyValueReader passes uninitialized memory to Read instance","modified":"2023-11-08T04:05:46.033472Z","packages":[{"ecosystem":"crates.io","name":"outer_cgi","purl":"pkg:cargo/outer_cgi","ranges":[">=0.0.0-0 <0.2.1"],"fixed":["0.2.1"]}]}],"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."]}