CVE-2026-105221
9.1
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| defunkt | gist | 4.0.0 < 6.1.0 | affected |
Weaknesses
- CWE-295: Improper Certificate Validation
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
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