Description

MQTTX is an MQTT 5.0 desktop client and MQTT testing tool. A Cross-Site Scripting (XSS) vulnerability was introduced in MQTTX v1.12.0 due to improper handling of MQTT message payload rendering. Malicious payloads containing HTML or JavaScript could be rendered directly in the MQTTX message viewer. If exploited, this could allow attackers to execute arbitrary scripts in the context of the application UI — for example, attempting to access MQTT connection credentials or trigger unintended actions through script injection. This vulnerability is especially relevant when MQTTX is used with brokers in untrusted or multi-tenant environments, where message content cannot be fully controlled. This vulnerability is fixed in 1.12.1.

INFO

Published Date :

2025-10-16T18:00:17.606Z

Last Modified :

2025-10-16T18:36:21.402Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-62413 vulnerability.

Vendors Products
Emqx
  • Mqttx
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-62413.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact