CVE-2026-48552
Nagios Core / XI DOM-based XSS via jsonquery.js
- State
- Published
- Severity
- 5.1 Medium
- Published
- Aug 12, 2026
- Updated
- Aug 14, 2026
- Reserved
- May 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Nagios CoreNagios Enterprises, LLC. |
|
Nagios XINagios Enterprises, LLC. |
|
References
- Security Disclosuresvendor-advisorypatch
- Changelogrelease-notes
- https://www.vulncheck.com/advisories/nagios-core-xi-dom-based-xss-via-jsonquery-jsthird-party-advisory
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