CVE-2026-105221

LOWCVSS 9.1 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-295

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-10-05: 210-05
Referenced assets2 URLs
Full discourse2 posts
  • CVE@CVEnew

    CVE-2026-105221 The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connec… https://www.cve.org/CVERecord?id=CVE-2026-105221

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    58.1K followersView on X
  • SecNews@SecNews_GR

    Η κρίσιμη ευπάθεια CVE-2026-105221 στο RubyGem Gist https://www.secnews.gr/737858/cve-2026-105221-rubygem-gist-tls/?fsp_sid=16677

    00000141
    7.0K followersView on X

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