Medium severity5.4NVD Advisory· Published Aug 12, 2026· Updated Sep 8, 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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Nagios/nagioscorellm-create
Range: <4.5.14
Nagios/Nagiosxillm-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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