Release Notes for Zabbix 6.0.21rc1

Zabbix Team is pleased to announce the availability of Zabbix 6.0.21rc1.

Zabbix is an enterprise-class open source distributed monitoring solution. Zabbix is released under the GPL, thus it is free of charge for both commercial and non-commercial use. A complete text of the license is available at

This document contains the release notes for Zabbix 6.0.21rc1. Download here.

The following sections describe the release in details and provide late-breaking or other information that supplements its main documentation.

New Features and Improvements

ZBXNEXT-8581 Added support for HTTP proxy in Azure templates Templates
ZBXNEXT-8558 Added MantisBT webhook Templates
ZBXNEXT-8589 Updated documentation, unified metric names and descriptions in PostgreSQL templates, removed unused macros, user parameters and queries in PostgreSQL by Zabbix agent Templates
ZBXNEXT-8528 Added AWS Cost Explorer template Templates
ZBXNEXT-8190 Increased MariaDB maximum supported version to 11.0 Frontend Proxy Server
ZBXNEXT-8582 Increased MySQL maximum supported version to 8.1 Frontend Proxy Server

Bug Fixes

ZBX-22771 Fixed handling of large unsigned integers in jsonpath Server
ZBX-22871 Fixed regular expression crash with invalid utf-8 sequences when pcre2 is used Agent
ZBX-23141 Fixed crash when maintenance is enabled and unexpected event exists for trigger prototype Proxy Server
ZBX-21255 Added support of the fmtnum() function for {ITEM.VALUE}, {ITEM.LASTVALUE} and expression macros Frontend
ZBX-21695 Fixed {TIME} macro not being resolved during scheduled report test Server
ZBX-23221 Fixed memory leaks when using certificate-based encryption in Zabbix Agent 1 and Agent 2; thanks to Masato Hirahata for the patch Agent Proxy Server
ZBX-22864 Fixed calculation of max_repetitions sent out to device in SNMP PDUs Proxy Server
ZBX-21574 Optimized Asterisk by HTTP template Templates
ZBX-18168 Added regexp runtime error logging for log*[] items Agent Proxy Server
ZBX-22677 Adjusted font colors for placeholders, disabled and readonly fields Frontend
ZBX-22972 Fixed displaying of dashboard pages when scrolling is enabled Frontend
ZBX-22528 Fixed draggable element position Frontend
ZBX-23067 Enhanced audit logging with reason of switching of HA node to active mode Server
ZBX-22613 Fixed script execution with API token as authentication API
ZBX-23060 Removed unused endpoints in JavaScript for Veeam Backup and Replication template Templates
ZBX-22772 Added trends cleanup for non-numeric value types Server
ZBX-23389 Fixed leading and trailing C0 control and space characters not being trimmed before parsing URLs Frontend
ZBX-23390 Fixed stack-buffer overflow in library module zbxjson
ZBX-23391 Changed hidden JS properties to be read only Proxy Server

Installation and Upgrade Notes


See Zabbix documentation for full details.


See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 6.0.21.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free Upgrade Service for easy migration from earlier versions of Zabbix. Please Contact sales for pricing and more details.


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