<!-- .. title: Version 2.1.1 released. .. slug: version-2-1-1-released .. date: 2026-02-04 22:30:00 UTC .. tags: Releases .. category: .. link: .. description: .. type: text -->

Version 2.1.1 of Mosquitto has been released. This is a bugfix release.

Broker

• Fix PUID/PGID checking for docker
• Add MOSQUITTO_UNSAFE_ALLOW_SYMLINKS environment variable to allow the restrictions on reading files through symlinks to be lifted in safe environments like kubernetes. Closes #3461.
• Fix inconsistent disconnect log message format, and add address:port.
• Fix plugin/global_plugin option not allowing space characters.
• Fix $SYS load values not being published initially. Closes #3459.
• Fix `max_connections not being honoured on libwebsockets listeners. This does not affect the built-in websockets support. Closes #3455.
• Don't enforce receive-maximum, just log a warning. This allows badly behaving clients to be fixed. Closes #3471.

Plugins

• Fix incorrect linking of libmosquitto_common.so for the acl and password file plugins. Closes #3460.

Build

• Fix building with WITH_TLS=no