{"cve":"CVE-2020-13482","nvd":{"published":"2020-05-25T22:15:09.860","modified":"2026-06-17T02:53:12.463","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4},"cwes":["CWE-295"],"references":["https://github.com/igrigorik/em-http-request/issues/339","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MKYP5TR5NTVVDX5R4HCNNH2OQR7M4X3J/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z32PUJA6RGBZ3TKSOTGUXZ45662S3MVF/","https://securitylab.github.com/advisories/GHSL-2020-094-igrigorik-em-http-request","https://github.com/igrigorik/em-http-request/issues/339"],"products":["em-http-request_project:em-http-request","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-13482","score":0.00928,"percentile":0.6054,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q27f-v3r6-9v77","url":"https://osv.dev/vulnerability/GHSA-q27f-v3r6-9v77","summary":"Improper Certificate Validation in EM-HTTP-Request","modified":"2024-02-16T08:17:37.719932Z","packages":[{"ecosystem":"RubyGems","name":"em-http-request","purl":"pkg:gem/em-http-request","ranges":["<1.1.6"],"fixed":["1.1.6"]}]}],"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."]}