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High · 7.4 CVE-2025-12790 EUVD-2025-38162GHSA-9c5q-w6gr-fxcq

Rubygem-mqtt: rubygem-mqtt hostname validation

Published Nov 6, 2025 · Updated Feb 26, 2026 · Assigned by redhat

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.

Affected products

VendorProductAffectedFixed
Nicholas J Humfrey ruby-mqtt < 0.7.0 0.7.0
Red Hat Red Hat Satellite 6 — —

Affected packages

EcosystemPackageAffectedFixedRecord
RubyGems mqtt < 0.7.0 0.7.0 GHSA-9c5q-w6gr-fxcq

References