Medium severity5.4NVD Advisory· Published Aug 12, 2026

CVE-2026-48552

Description

Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to DOM-based cross-site scripting in jsonquery.js. Unencoded JSON string values reflected from stored fields are inserted into the DOM without sanitization, allowing attackers to run arbitrary JavaScript in the victim's browser.

Affected products

Nagios/nagioscorellm-create
Range: <4.5.14
Nagios/Nagios XIllm-create
Range: <2026R1.7

Patches

Vulnerability mechanics

References

github.com/NagiosEnterprises/nagioscore/blob/master/Changelognvd
www.nagios.com/security-disclosures/nagios-core/nvd
www.vulncheck.com/advisories/nagios-core-xi-dom-based-xss-via-jsonquery-jsnvd

News mentions

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000