Vuln Signal Radar
public-safe defensive signal
Agent JSON
CRITICALpublic-safe

CVE-2026-105221

NVD: 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. NVD: 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. OSV: Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification

CVSS
9.1 Severity
CRITICAL EPSS
0.0018 (7) KEV
-

Source-published summary

NVD: 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. NVD: 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. OSV: Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification

Possible impact

This critical severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for critical severity review.

Affected context

Affected product or version requires source confirmation.

Remediation / advisory

Remediation reference present; patch status requires confirmation in the linked advisory.

Why it matters

This critical severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for critical severity review.; CVSS 9.1 (CRITICAL); EPSS percentile 7; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

明示タグなし

Urgency reasons

CVSS CRITICALvendor advisory presentrecent update

Source-derived note

Summary derived from NVD / OSV description; unsafe procedural detail is not shown.

Redaction metadata

source summary used
True
fallback summary used
False
unsafe procedural detail present
false
raw source displayed
false
public summary redacted
true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.

Official references