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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9c5q-w6gr-fxcq MQTT does not validate hostnames
Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

History

Fri, 07 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Thu, 06 Nov 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 06 Nov 2025 21:15:00 +0000

Type Values Removed Values Added
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.
Title Rubygem-mqtt: rubygem-mqtt hostname validation
First Time appeared Redhat
Redhat satellite
Weaknesses CWE-29
CPEs cpe:/a:redhat:satellite:6
Vendors & Products Redhat
Redhat satellite
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-11-06T21:30:09.639Z

Reserved: 2025-11-06T03:33:00.733Z

Link: CVE-2025-12790

cve-icon Vulnrichment

Updated: 2025-11-06T21:30:07.053Z

cve-icon NVD

Status : Received

Published: 2025-11-06T21:15:40.000

Modified: 2025-11-06T21:15:40.000

Link: CVE-2025-12790

cve-icon Redhat

Severity : Important

Publid Date: 2025-11-06T00:00:00Z

Links: CVE-2025-12790 - Bugzilla

cve-icon OpenCVE Enrichment

No data.