CVE-2020-36865: nagios nagios_xi Cross-site Scripting

Vulnerability summary

CVE-2020-36865 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in nagios nagios_xi. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.

Timeline

1. 30-10-2025
   PublishedVulnerability first disclosed.
2. 17-11-2025
   Last modifiedVulnerability information updated.

Description

Nagios XI versions prior to 5.7.2 are vulnerable to cross-site scripting (XSS) via the BPI (Business Process Intelligence) component’s Config Management and Edit Config page. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.