{"id":"CVE-2026-126495","published":"2026-11-11T01:17:14.187","lastModified":"2026-11-11T01:17:14.187","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.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/emqx/MQTTX","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/background.ts#L276-L283","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/JSONViewer.vue#L175-L184","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/TreeView.vue#L195-L226","tags":[]},{"url":"https://github.com/emqx/MQTTX/issues/2180","tags":[]},{"url":"https://www.vulncheck.com/advisories/mqttx-through-1.13.3-stored-xss-via-topic-tree-and-json-tree-tooltips","tags":[]}],"exploitRefs":[{"url":"https://github.com/emqx/MQTTX","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/background.ts#L276-L283","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/JSONViewer.vue#L175-L184","tags":[]},{"url":"https://github.com/emqx/MQTTX/blob/v1.13.3/src/widgets/TreeView.vue#L195-L226","tags":[]},{"url":"https://github.com/emqx/MQTTX/issues/2180","tags":[]}],"hasPoc":true,"ai":null}