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CVE WatchOct 18, 2026

CVE-2025-12790

A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle (MIT

CVSS

7.4

High

EPSS

0.4%

p32

KEV

—

Exploit Today

9

0-100

Published: Nov 6, 2025 · Last modified: Oct 18, 2026 · CWE-29

EPSS · 30d
0.4%EPSS · 30 days0.4%
2026-10-042026-11-01
Technical 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.

Official references
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