{"id":"CVE-2016-10931","aliases":["GHSA-34p9-f4q3-c4r7","RUSTSEC-2016-0001"],"url":"https://o3.security/vulnerability/CVE-2016-10931","summary":"Improper Certificate Validation in openssl","details":"An issue was discovered in the openssl crate before 0.9.0 for Rust. There is an SSL/TLS man-in-the-middle vulnerability because certificate verification is off by default and there is no API for hostname verification.","published":"2019-08-26T12:15:11.327Z","modified":"2026-07-08T12:44:36.585763Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"openssl","fixedVersion":"0.9.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2016-0001.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T12:44:36.585763Z"}}