Eclipse Foundation Eclipse Mosquitto MQTT Broker (pre-2.0) — Default Password
Default username and password for the Eclipse Foundation Eclipse Mosquitto MQTT Broker (pre-2.0): (blank) / (blank). Learn how to log in and how to change the default credentials.
Prior to version 2.0, Mosquitto allowed anonymous (unauthenticated) client connections by default; allow_anonymous defaulted to true unless another security plugin was configured. Version 2.0 changed this: authentication options must be explicitly configured before clients can connect.
| Username | Password | Access | Version / firmware | Notes |
|---|---|---|---|---|
(blank / none) | (blank / none) | API | < 2.0 | Anonymous MQTT access on port 1883 permitted by default; no credentials required |
- Source
- official documentation
Responsible use
This database lists publicly documented default credentials so administrators can find and change them. Only use these on systems you own or are authorized to test.