Release Notes for Zabbix 3.4.9rc2

Zabbix Team is pleased to announce the availability of Zabbix 3.4.9rc2.

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 3.4.9rc2. Download it from here.

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

Bug Fixes

ZBX-13781 Fixed possible crash in the function "" of Zabbix Agentd Agent
ZBX-14337 Fixed persistent xss in map navigation tree widget Frontend
ZBX-14336 Fixed persistent xss vulnerability in services Frontend
ZBX-12821 Fixed multiple javascript memory leaks Frontend
ZBX-13755 Fixed proxy lastaccess update on 32-bit Zabbix server Server
ZBX-12425 Fixed selection of web items in the "Plain text" screen element Frontend
ZBX-13781 Fixed CRLF injection in Zabbix Agentd Agent
ZBX-13766 Fixed comparison of two large float numbers in expressions Server
ZBX-13481 Fixed incorrect parsing of BITS data type in SNMP response Proxy Server
ZBX-13744 Fixed potential shared memory leak when item is removed Proxy Server
ZBX-13742 Fixed parsing of the operator "not" in trigger expression API Frontend
ZBX-13535 Fixed trigger recovery expression for 'High error rate' trigger Templates
ZBX-13278 Fixed trigger expression for 'Link down' trigger Templates
ZBX-12805 Increased command line limit for proc.num checks on hp-ux systems Agent
ZBX-13728 Fixed problem duration on trigger page being calculated incorrectly Frontend
ZBX-13660 Fixed data types passed to is_ushort() for converting PID, port and process number Agent Proxy Server
ZBX-12935, ZBX-13539 Fixed displaying of floating point values under the "Latest data" page Frontend
ZBX-13579 Fixed unnecessary data getting when agent becomes available in the non-collection data period Agent Proxy Server
ZBX-13685 Fixed maintenance entries displayed in list when filter is applied Frontend
ZBX-12756 Improved configure script to check iconv library Installation
ZBX-13667 Added notification in zabbix server log about 'error' in elasticsearch json response Server
ZBX-13683 Fixed multiselect items not being sorted by name Frontend
ZBX-13299 Fixed autoregistration, discovery and internal notifications not being sent due to uninitialized severity Server
ZBX-13607 Changed ping script to return success also for timeouts Installation
ZBX-12967 Fixed slide show refresh interval multiplier menu not working Frontend
ZBX-13696 Added maximum record limit to old session removal in housekeeper Server
ZBX-13642 Fixed undefined index in user edit form Frontend
ZBX-13668 Fixed dynamic widget searching for item key in item prototypes Frontend
ZBX-13500 Fixed fractional values in triggers being misinterpreted without a leading 0 Frontend
ZBX-13561 Fixed incorrectly displayed pie graph when first item has no data Frontend
ZBX-13517 Fixed undefined index in pie charts Frontend
ZBX-13499 Fixed checkbox selector in problems table Frontend
ZBX-13598 Fixed crash when Zabbix process cannot connect to preprocessing service Server
ZBX-13625 Fixed blinking in the problem widget Frontend
ZBX-13560 Fixed acknowledge notifications being visible in the event popup Frontend
ZBX-13298 Fixed missing graph after faulty graph edit form submission Frontend

Installation and Upgrade Notes


See Zabbix指导手册。 for full details.


See 升级指南 for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 3.4.9.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free 升级服务 for easy migration from earlier versions of Zabbix. Please 联系我们 for pricing and more details.


Zabbix 3.4 Manual