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
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-105221 ↗
- github.com/defunkt/gist ↗
- github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb ↗
- github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf ↗
- github.com/defunkt/gist/issues/373 ↗
- www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-verification ↗
Related CVEs
← CVE Index: search every CVE from the last 30 days
This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.