Improper Authorization Affecting mosquitto package, versions <2.0.12

  • Attack Complexity


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  • snyk-id


  • published

    29 Nov 2021

  • disclosed

    29 Nov 2021

  • credit


How to fix?

Upgrade Mosquitto to version 2.0.12 or higher.


Mosquitto is an open source implementation of a server for version 3.1 and 3.1.1 of the MQTT protocol.

Affected versions of this package are vulnerable to Improper Authorization. When using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked.