CVE-2026-105221
HIGH
NVD
CVSS Score
7.4
Severity
HIGH
Published
Oct 04, 2026
Vendor
unknown
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.
References
- 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://github.com/defunkt/gist/issues/373
- https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification