CVE-2025-12790

Published: Nov 6, 2025Modified: Jun 17, 2026Deferred

7.4

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 2.2 / Impact: 5.2

Source: secalert@redhat.com (Secondary)

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.

Related CWEs

CWE-29

Path Traversal: '\..\filename'

The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.

References (3)

https://access.redhat.com/security/cve/CVE-2025-12790

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2413004

Source: secalert@redhat.com

https://github.com/njh/ruby-mqtt/blob/main/NEWS.md#ruby-mqtt-version-070-2025-10-29

Source: secalert@redhat.com

Timeline

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