CVE-2020-36862

Nagios XI < 5.6.11 Unauthenticated XSS and SSRF via Highcharts

CVSS 6.9 MEDIUMEPSS 0.5%CWE-79 CWE-918

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.9EPSS 0.5%KEV nãoPoC —Patch referenciado

Lifecycle

30 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

Affected products

Nagios · XI

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References

https://www.nagios.com/changelog/nagios-xi/https://www.vulncheck.com/advisories/nagios-xi-unauthenticated-xss-and-ssrf-via-highcharts