Description
A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle (MITM) attack.
Scores
CVSS v3
7.4
EPSS
0.0004
EPSS Percentile
12.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-29
Status
published
Products (3)
Nicholas J Humfrey/ruby-mqtt
< 0.7.0
Red Hat/Red Hat Satellite 6
rubygems/mqtt
0 - 0.7.0RubyGems
Published
Nov 06, 2025
Tracked Since
Feb 18, 2026