MQTT.js
npmmqttMQTT.js is the standard MQTT client library for Node.js and browser environments, used in IoT device communication, telemetry pipelines, and home automation systems. It connects to MQTT brokers (Mosquitto, HiveMQ, AWS IoT) and subscribes to and publishes messages on topics.
Checking MQTT.js
mqtt 5.10.0 is a clean version with no known supply chain compromise. The response returns compromised: false with an empty sources array.
curl "https://api.attestd.io/v1/check?product=mqtt&version=5.10.0" \
-H "Authorization: Bearer YOUR_API_KEY"{
"product": "mqtt",
"version": "5.10.0",
"supported": true,
"risk_state": "none",
"supply_chain": {
"compromised": false,
"sources": [],
"malware_type": null,
"description": null,
"advisory_url": null,
"compromised_at": null,
"removed_at": null
},
"last_updated": "2026-05-01T00:00:00Z"
}Why this package is monitored
IoT messaging clients connect to brokers using credentials and client certificates. A backdoored version can exfiltrate broker credentials and subscribe to all topics the client has access to, capturing device telemetry and control messages.
Attestd monitors mqtt using the following detection sources:
registryManually curated advisories in the Attestd registry, verified by a human analyst. Confidence 1.0.
osvOSV.dev malicious-package advisories with IDs prefixed MAL-. Confidence 0.95.
npm_deprecationnpm package versions with deprecation messages containing targeted attack language such as malicious, backdoor, or compromised. Confidence 0.80.