CVE-2026-126495 | BDVDB-2026-404826 Detail
emqxMQTTX
Description#
MQTTX desktop through 1.13.3 contains a stored cross-site scripting vulnerability that allows attackers to inject script by publishing malicious MQTT topic names or payloads rendered unescaped in tooltips. Attackers controlling a broker or publishing to subscribed topics can execute script in the Electron renderer, which has nodeIntegration enabled, when victims hover Topic Tree or JSON tree nodes.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References#
- https://github.com/emqx/MQTTX/issues/2180
- https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/TreeView.vue#L195-L226
- https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/JSONViewer.vue#L175-L184
- https://github.com/emqx/MQTTX/blob/v1.13.3/src/background.ts#L276-L283
- https://github.com/emqx/MQTTX
- https://www.vulncheck.com/advisories/mqttx-through-1.13.3-stored-xss-via-topic-tree-and-json-tree-tooltips
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.