CVE-2021-47698

EUVD-2025-37736
Nagios XI versions prior to 5.8.7 using embedded Nagios Core are vulnerable to cross-site scripting (XSS) via the Core UI’s Views URL handling (escape_string()). 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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 65%
Affected Products (NVD)
VendorProductVersion
nagiosnagios_xi
𝑥
< 5.8.7
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.nagios.com/changelog/nagios-xi/
https://www.vulncheck.com/advisories/nagios-xi-xss-in-core-ui-views-url-handling