PT-2025-45694 · Rubygems · Mqtt

Published 2025-11-06 · Updated 2025-11-06

OSV

CVSS v3.1

7.4

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

Fix

Weakness Enumeration

CWE-29

Related Identifiers

GHSA-9C5Q-W6GR-FXCQ

Affected Products

Mqtt

References · 6

• https://osv.dev/vulnerability/GHSA-9c5q-w6gr-fxcq · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-12790 · Security Note
• https://github.com/njh/ruby-mqtt/blob/main/NEWS.md#ruby-mqtt-version-070-2025-10-29 · Note
• https://access.redhat.com/security/cve/CVE-2025-12790 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2413004 · Note
• http://github.com/njh/ruby-mqtt · Note