Version 2.0.19 of Mosquitto has been released. This is a security and bugfix release. Security: - Fix mismatched subscribe/unsubscribe with normal/shared topics. - Fix crash on bridge using remapped topic being sent a crafted packet. - Don't allow SUBACK with missing reason codes in client library. Broker: - Fix assert failure when loading a persistence file that contains subscriptions with no client id. - Fix local bridges being incorrectly expired when `persistent_client_expiration` is in use. - Fix use of CLOCK_BOOTTIME for getting time. Closes [#3089]. - Fix mismatched subscribe/unsubscribe with normal/shared topics. - Fix crash on bridge using remapped topic being sent a crafted packet. Client library: - Fix some error codes being converted to string as "unknown". Closes [#2579]. - Clear SSL error state to avoid spurious error reporting. Closes [#3054]. - Fix "payload format invalid" not being allowed as a PUBREC reason code. - Don't allow SUBACK with missing reason codes. Build: - Thread support is re-enabled on Windows. [#2579]: https://github.com/eclipse/mosquitto/issues/2579 [#3054]: https://github.com/eclipse/mosquitto/issues/3054 [#3089]: https://github.com/eclipse/mosquitto/issues/3089