CVE-2025-62413 (GCVE-0-2025-62413)
Vulnerability from cvelistv5
Published
2025-10-16 18:00
Modified
2025-10-16 18:36
Severity ?
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
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.
References
security-advisories@github.comhttps://github.com/emqx/MQTTX/commit/2963f78a4b3227cdb93597f546a75b75dee1059f
security-advisories@github.comhttps://github.com/emqx/MQTTX/security/advisories/GHSA-29gf-9r9v-j4m3
Impacted products
Vendor Product Version
emqx MQTTX Version: = 1.12.0
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