{"id":"CVE-2026-105221","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-105221","summary":"The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb…","details":"The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim's gists.","published":"2026-10-04T23:16:59.770","modified":"2026-10-04T23:16:59.770","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":[],"fix":{"url":"https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf","label":"defunkt/gist@07ccc1a"},"references":[{"type":"WEB","url":"https://github.com/defunkt/gist"},{"type":"WEB","url":"https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468"},{"type":"WEB","url":"https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf"},{"type":"WEB","url":"https://github.com/defunkt/gist/issues/373"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-04T23:16:59.770"}}