CVE-2026-48552

MEDIUM

CVE: CVE-2026-48552 - Nagios Core before 4Sign in to save

CVSS

5.4

CVSS v3.1

EPSS

N/A

Exploit Prediction Score

Published

August 12, 2026

Exploitability

No EPSS data available

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.

Weaknesses

CWE-79

Affected Packages

No package data available.

Aliases

CVE-2026-48552

Related references

Publisher and database URLs for this record (shown for attribution; reading stays in Bugflare).

https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog
https://www.nagios.com/security-disclosures/nagios-core/
https://www.vulncheck.com/advisories/nagios-core-xi-dom-based-xss-via-jsonquery-js