{"id":"CVE-2020-13482","aliases":["GHSA-q27f-v3r6-9v77"],"url":"https://o3.security/vulnerability/CVE-2020-13482","summary":"Improper Certificate Validation in EM-HTTP-Request","details":"EM-HTTP-Request 1.1.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.","published":"2020-05-25T22:15:09.860Z","modified":"2026-07-08T05:57:39.190722026Z","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"RubyGems","name":"em-http-request","fixedVersion":"1.1.6"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF/"},{"type":"FIX","url":"https://github.com/igrigorik/em-http-request/issues/339"},{"type":"EVIDENCE","url":"https://securitylab.github.com/advisories/GHSL-2020-094-igrigorik-em-http-request"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:57:39.190722026Z"}}