Medium severity · published Oct 30, 2025
CVE-2022-50587
Nagios XI < 5.8.9 Stored XSS via Command Names in Apply Config Error Text
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
Nagios XI versions prior to 5.8.9 are vulnerable to cross-site scripting (XSS) via the Apply Configuration error text. 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XI
XI · Nagios
before 5.8.9 · source: vendor
NX
Nagios XI · Nagios
before 5.8.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-50587
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-50587
Release Notes
https://www.nagios.com/changelog/nagios-xi/
Third Party Advisory
https://www.vulncheck.com/advisories/nagios-xi-stored-xss-via-command-names-in-apply-config-error-text
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