P4Verified

CVE-2026-105221: gist 4.0.0 to before 6.1.0

CVE-2026-105221. CVSS 3.1 base score 7.4 (HIGH, Vendor/CNA). EPSS 0.00178 (percentile 0.06709), scored 05-Oct-2026. Fixed version: 9c684d1f683460b9501e3efcb95edcb32487ddfe.

Affected technology

gist · 4.0.0 to before 6.1.0
defunkt

Description’s affected range: before 6.1.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

On-path attackers can intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Vendor/CNA’s CVSS 4.0 assessment (base score 9.1/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 12-Oct-2026 00:35 UTC

CWE: CWE-295
CCR priority: 29.6 /100 (P4)
CVSS 3.1: 7.4 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N · Vendor/CNA
EPSS: 0.00178 · percentile 0.06816 · 2026-10-11
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-11 23:42:05.235979+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-05 08:30:10.441536+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-06 17:55:17.257073+00:00 UTC
OSV.dev · Source record · observed 2026-10-07 03:19:31.921362+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-105221.html