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 download.

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

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 3.4.9.

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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