What is CVE-2023-53690?

CVE-2023-53690 is a medium-severity vulnerability in Nagios Fusion, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-10-30.

How severe is CVE-2023-53690?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Nagios Fusion

CVE-2023-53690

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 J…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (51.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nagios Fusion — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (vendor-advisory, patch, Vendor Advisory)
disclosure@vulncheck.com (release-notes, Release Notes, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2023-53690?: CVE-2023-53690 is a medium-severity vulnerability in Nagios Fusion, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2025-10-30.
How severe is CVE-2023-53690?: Medium severity. CVSS v3 base score is 4.8 out of 10.