CVE-2026-105221
highThe gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_c…
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/defunkt/gist disclosure@vulncheck.com
- https://github.com/defunkt/gist/blob/v6.0.0/lib/gist.rb#L466-L468 disclosure@vulncheck.com
- https://github.com/defunkt/gist/commit/07ccc1a6d46e9d36f0e85d0b1c5d795890ae6bcf disclosure@vulncheck.com
- https://github.com/defunkt/gist/issues/373 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/gist-rubygem-before-6.1.0-disabled-tls-certificate-ve... disclosure@vulncheck.com