PT-2025-44549 · Nagios Enterprises · Nagios Xi

Christian Weiler · Published 2025-10-30 · Updated 2025-10-30 · CVE-2020-36866

Positive Technologies (AI Summary)

CVSS v2.0

5.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:N

Name of the Vulnerable Software and Affected Versions Nagios XI versions prior to 5.7.2

Description Nagios XI versions prior to 5.7.2 are susceptible to cross-site scripting (XSS) through the Manage Users page within the Admin interface. This is due to inadequate validation or escaping of user-provided input, potentially enabling an attacker to inject and execute arbitrary script within a victim’s browser.

Recommendations Update to version 5.7.2 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BDU:2025-14423

CVE-2020-36866

Affected Products

Nagios Xi

References · 6

• https://osv.dev/vulnerability/CVE-2020-36866 · Vendor Advisory
• https://nagios.com/changelog/nagios-xi · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-36866 · Security Note
• https://bdu.fstec.ru/vul/2025-14423 · Security Note
• https://vulncheck.com/advisories/nagios-xi-xss-via-manage-users-in-admin-interface · Note
• https://twitter.com/CVEnew/status/1984021305608319327 · Twitter Post