CVE-2023-53690
low-risk
Published 2025-10-30
Nagios Fusion versions prior to 4.2.0 contain a stored cross-site scripting (XSS) vulnerability in the LDAP/AD authentication-server configuration. Unsanitized user input can be stored and later rendered in the administrative UI, causing JavaScript to execute in the browser of any user who views the affected page. An attacker who can add authentication servers via LDAP/AD integration could persist a malicious payload that executes in the context of other users' browsers.
Do I need to act?
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0.91% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10
Medium
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (3)
Release Notes
https://www.nagios.com/changelog/nagios-fusion/
Vendor Advisory
https://www.nagios.com/products/security/#fusion
Third Party Advisory
https://www.vulncheck.com/advisories/nagios-fusion-ldap-ad-integration-stored-xs...
27
/ 100
low-risk
Severity
19/34 · Moderate
Exploitability
3/34 · Minimal
Exposure
5/34 · Minimal