Vulnerability Monitor

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CVE-2023-53689

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.

Published

2025-10-30T22:15:42.633

Last Modified

2025-11-06T18:21:58.050

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 4.8 (MEDIUM)

Weaknesses

Type: Secondary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nagios	fusion	< 4.2.0	Yes

References

https://www.nagios.com/changelog/nagios-fusion/ Release Notes ([email protected])
https://www.nagios.com/products/security/#fusion Vendor Advisory ([email protected])
https://www.vulncheck.com/advisories/nagios-fusion-license-information-reflected-xss Third Party Advisory ([email protected])