XML external entity (XXE) vulnerability in Zabbix 1.8.x before 1.8.21rc1, 2.0.x before 2.0.13rc1, 2.2.x before 2.2.5rc1, and 2.3.x before 2.3.2 allows remote attackers to read arbitrary files or potentially execute arbitrary code via a crafted DTD in an XML request.

Cross-site scripting (XSS) vulnerability in ZABBIX before 1.8.10 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to the profiler.

Multiple cross-site scripting (XSS) vulnerabilities in Zabbix before 1.8.10 allow remote attackers to inject arbitrary web script or HTML via the gname parameter (aka host groups name) to (1) hostgroups.php and (2) usergrps.php, the update action to (3) hosts.php and (4) scripts.php, and (5) maintenance.php.

SQL injection vulnerability in popup.php in Zabbix 1.8.3 and 1.8.4, and possibly other versions before 1.8.9, allows remote attackers to execute arbitrary SQL commands via the only_hostid parameter.

popup.php in Zabbix before 1.8.7 allows remote attackers to read the contents of arbitrary database tables via a modified srctbl parameter.

Cross-site scripting (XSS) vulnerability in acknow.php in Zabbix before 1.8.6 allows remote attackers to inject arbitrary web script or HTML via the backurl parameter.

zabbix_agentd in Zabbix before 1.8.6 and 1.9.x before 1.9.4 allows context-dependent attackers to cause a denial of service (CPU consumption) by executing the vfs.file.cksum command for a special device, as demonstrated by the /dev/urandom device.

Zabbix before 1.8.6 allows remote attackers to obtain sensitive information via an invalid srcfld2 parameter to popup.php, which reveals the installation path in an error message.