CVE-2023-53689

Nagios Fusion < 4.2.0 License Information Reflected XSS

CVSS 6 MEDIUMEPSS 0.7%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

30 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Nagios Fusion versions prior to 4.2.0 contain a reflected cross-site scripting (XSS) vulnerability in the license key configuration flow that can result in execution of attacker-controlled script in the browser of a user who follows a crafted URL. While the application server itself is not directly corrupted by the reflected XSS, the resulting browser compromise can lead to credential/session theft and unauthorized administrative actions.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Affected products

Nagios · Fusion

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References

https://www.nagios.com/changelog/nagios-fusion/https://www.nagios.com/products/security/#fusion https://www.vulncheck.com/advisories/nagios-fusion-license-information-reflected-xss