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Status published
Medium
CVE-2021-47698
Nagios XI < 5.8.7 XSS in Core UI Views URL handling
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Nagios
View all reports →Affected Software
XI
Vulnerable Versions:
0
Timeline
Official Publish:
November 3rd, 2025
Last Modified:
November 17th, 2025
Added to House:
July 21st, 2026