{"id":"CVE-2026-105221","revision":"3f4779cab78a4fe397d390e993cf8aa5","records":[{"revision":"3f4779cab78a4fe397d390e993cf8aa5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-105221","aliases":[],"title":"Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification","description":"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.","state":0,"publishedAt":"2026-10-04T22:31:47.153+00:00","modifiedAt":"2026-10-05T20:28:43.344+00:00","affected":[{"ecosystem":"Vendor product","name":"gist","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"defunkt\",\n                    \"product\": \"gist\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:gem/gist\",\n                    \"versions\": [\n                        {\n                            \"version\": \"4.0.0\",\n                            \"lessThan\": \"6.1.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":9.1,"severity":"CRITICAL"},{"system":"CVSS 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,"severity":"HIGH"}],"references":["https://github.com/defunkt/gist/issues/373","https://github.com/defunkt/gist","https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468","https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf","https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105221","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-105221","identifiers":["CVE-2026-105221"]},"retained":false,"historicalAffected":[]}],"coverage":[]}