CVE-2020-36861

The Core Config Manager (CCM) in Nagios XI versions prior to CCM 3.0.8 / Nagios XI 5.7.5 contains multiple cross-site scripting (XSS) vulnerabilities in the overlay UI elements and the Notification/Check Period pages. 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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://www.nagios.com/changelog/nagios-xi/	Release Notes
https://www.vulncheck.com/advisories/nagios-xi-ccm-xss-via-overlay-rendering-and-notification-check-period-pages	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

History

06 Nov 2025, 18:20

Type	Values Removed	Values Added
References	~~() https://www.nagios.com/changelog/nagios-xi/ -~~	() https://www.nagios.com/changelog/nagios-xi/ - Release Notes
References	~~() https://www.vulncheck.com/advisories/nagios-xi-ccm-xss-via-overlay-rendering-and-notification-check-period-pages -~~	() https://www.vulncheck.com/advisories/nagios-xi-ccm-xss-via-overlay-rendering-and-notification-check-period-pages - Third Party Advisory
First Time		Nagios nagios Xi Nagios
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
CPE		cpe:2.3:a:nagios:nagios_xi::::::::

30 Oct 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-30 22:15

Updated : 2025-11-06 18:20

NVD link : CVE-2020-36861

Mitre link : CVE-2020-36861

CVE.ORG link : CVE-2020-36861

JSON object : View

Products Affected

nagios

nagios_xi

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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