Releases Packages mosquitto – MQTT version 3.1/3.1.1 compatible message broker Details Kathrin Kleinhammer discovered that Mosquitto incorrectly handled certaininputs. If a user or an automated system were provided with a specially craftedinput, a remote attacker could possibly use this issue to cause a denial ofservice. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-34431)

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