A stored cross-site scripting (XSS) vulnerability in the NOC component of Nagios XI version up to and including 2024R1 allows low-privileged users to execute malicious HTML or JavaScript code via the audio file upload functionality from the Operation Center section. This allows any authenticated user to execute arbitrary JavaScript code on behalf of other users, including the administrators.

Nagios XI before version 5.11.3 was discovered to contain a remote code execution (RCE) vulnerability via the component command_test.php.

Nagios XI before version 5.11.3 was discovered to contain a SQL injection vulnerability via the bulk modification tool.

A SQL injection vulnerability in Nagios XI 5.11.1 and below allows authenticated attackers with privileges to manage host escalations in the Core Configuration Manager to execute arbitrary SQL commands via the host escalation notification settings.

A SQL injection vulnerability in Nagios XI v5.11.1 and below allows authenticated attackers with announcement banner configuration privileges to execute arbitrary SQL commands via the ID parameter sent to the update_banner_message() function.

A Cross-site scripting (XSS) vulnerability in Nagios XI version 5.11.1 and below allows authenticated attackers with access to the custom logo component to inject arbitrary javascript or HTML via the alt-text field. This affects all pages containing the navbar including the login page which means the attacker is able to to steal plaintext credentials.

SQL injection vulnerability in functions/prepend_adm.php in Nagios Core Config Manager in Nagios XI before 2012R2.4 allows remote attackers to execute arbitrary SQL commands via the tfPassword parameter to nagiosql/index.php.