Answer in brief
CVE-2026-48552 records a Unknown severity vulnerability in Nagios Core / XI DOM-based XSS via jsonquery.js. The current sources do not mark it as known exploited. The current feed maps Nagios Enterprises, LLC./Nagios Core (generic), Nagios Enterprises, LLC./Nagios XI (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nagios Enterprises, LLC./Nagios Core (generic), Nagios Enterprises, LLC./Nagios XI (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nagios Enterprises, LLC./Nagios Coregeneric | >=0 <4.5.14 | 4.5.14 |
| Nagios Enterprises, LLC./Nagios XIgeneric | >=0 <2026R1.7 | 2026R1.7 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-48552 records a Unknown severity vulnerability in Nagios Core / XI DOM-based XSS via jsonquery.js. The current sources do not mark it as known exploited. The current feed maps Nagios Enterprises, LLC./Nagios Core (generic), Nagios Enterprises, LLC./Nagios XI (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nagios Enterprises, LLC./Nagios Core (generic), Nagios Enterprises, LLC./Nagios XI (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nagios Enterprises, LLC./Nagios Coregeneric | >=0 <4.5.14 | 4.5.14 |
| Nagios Enterprises, LLC./Nagios XIgeneric | >=0 <2026R1.7 | 2026R1.7 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
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.
Quoted source text, attributed separately from HOL analysis.