CVE-2020-36861
MEDIUMNagios XI < 5.7.5 - Stored Cross-Site Scripting in Core Config Manager Overlay and Notification Pages
Title source: llmDescription
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.
References (2)
Core 2
Core References
Release Notes release-notes
patch
https://www.nagios.com/changelog/nagios-xi/
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/nagios-xi-ccm-xss-via-overlay-rendering-and-notification-check-period-pages
Scores
CVSS v3
5.4
EPSS
0.0037
EPSS Percentile
59.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
nagios/nagios_xi
< 5.7.5
Published
Oct 30, 2025
Tracked Since
Feb 18, 2026