CVE-2025-12790

high

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.

References

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-38162

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

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

Details

Source: Mitre, NVD

Published: 2025-11-06

Updated: 2026-10-18

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 7.4

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