Nagios XI 5.5.6 allows reflected cross site scripting from remote unauthenticated attackers via the oname and oname2 parameters.

A privilege escalation vulnerability was found in nagios 4.2.x that occurs in daemon-init.in when creating necessary files and insecurely changing the ownership afterwards. It's possible for the local attacker to create symbolic links before the files are to be created and possibly escalating the privileges with the ownership change.

qh_help in Nagios Core version 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attacker to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.

qh_core in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.

qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.

A SQL injection issue was discovered in Nagios XI before 5.4.13 via the admin/commandline.php cname parameter.

A SQL injection issue was discovered in Nagios XI before 5.4.13 via the admin/logbook.php txtSearch parameter.

A SQL injection issue was discovered in Nagios XI before 5.4.13 via the admin/info.php key1 parameter.

A SQL injection issue was discovered in Nagios XI before 5.4.13 via the admin/menuaccess.php chbKey1 parameter.

An issue was discovered in Nagios XI 5.4.13. A registered user is able to use directory traversal to read local files, as demonstrated by URIs beginning with index.php?xiwindow=./ and config/?xiwindow=../ substrings.