CVE-2026-105221 (GCVE-0-2026-105221)

Vulnerability from cvelistv5 – Published: 2026-10-04 22:31 – Updated: 2026-10-04 22:31
VLAI
Title
Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification
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.
Severity
9.1 (Critical)
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
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version CPE status
defunkt gist Affected: 4.0.0 , < 6.1.0 (semver)
guessed Create a notification for this product.
Date Public
2026-06-16 00:00
Credits
Siyang Wu
Show details on NVD website
To clipboard 

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