CVE-2026-105221

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Source
https://cve.org/CVERecord?id=CVE-2026-105221
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105221.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-105221
Downstream
Published
2026-10-04T22:31:47Z
Modified
2026-10-06T02:47:21Z
Severity
  • 9.1 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
Gist RubyGem before 6.1.0 Disabled TLS Certificate Verification
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-295"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105221.json"
}
References

Affected packages

Git / github.com/defunkt/gist

Affected ranges

Type
GIT
Repo
https://github.com/defunkt/gist
Events
Introduced
d6de1c47b2549b00e1d26c08eaefce962c9390b1
Fixed
9c684d1f683460b9501e3efcb95edcb32487ddfe
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "6.1.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.1.0
v4.1.1
v4.1.2
v4.1.3
v4.2.1
v4.3.0
v4.4.0
v4.4.1
v4.4.2
v4.5.0
v4.6.0
v4.6.1
v4.6.2
v5.*
v5.0.0
v5.1.0
v6.*
v6.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105221.json"