CVE-2020-36862 - CVE House
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Status published Medium CVE-2020-36862

Nagios XI < 5.6.11 Unauthenticated XSS and SSRF via Highcharts

Vulnerability Description

Nagios XI versions prior to 5.6.11 contain unauthenticated vulnerabilities in the Highcharts local exporting tool. Crafted export requests could (1) inject script into exported/returned content due to insufficient output encoding (XSS), and (2) cause the server to fetch attacker-specified URLs (SSRF), potentially accessing internal network resources. An unauthenticated remote attacker can leverage these issues to execute script in a user's browser when the exported content is viewed and to disclose sensitive information reachable from the export server via SSRF.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

XI
Vulnerable Versions:
0

Timeline

Official Publish: October 30th, 2025
Last Modified: November 17th, 2025
Added to House: July 21st, 2026

CVSS Vectors

Weaknesses (CWE)