{"id":"CVE-2026-105221","published":"2026-10-04T23:16:59.770","lastModified":"2026-10-06T16:08:43.180","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.","cvssScore":7.4,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-295"],"vendors":[],"products":[],"references":[{"url":"https://github.com/defunkt/gist","tags":[]},{"url":"https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468","tags":[]},{"url":"https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf","tags":[]},{"url":"https://github.com/defunkt/gist/issues/373","tags":[]},{"url":"https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification","tags":[]}],"exploitRefs":[{"url":"https://github.com/defunkt/gist","tags":[]},{"url":"https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468","tags":[]},{"url":"https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf","tags":[]},{"url":"https://github.com/defunkt/gist/issues/373","tags":[]}],"hasPoc":true,"ai":null}