Bug 2545734 (CVE-2026-105221) - CVE-2026-105221 gist: gist: Traffic interception and credential theft via improper TLS certificate validation
Summary: CVE-2026-105221 gist: gist: Traffic interception and credential theft via imp...
Keywords:
Status: NEW
Alias: CVE-2026-105221
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2546280
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-04 22:51 UTC by OSIDB Bzimport
Modified: 2026-10-06 05:08 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-04 22:51:27 UTC 
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.
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