CVE-2021-33179

6.1 mediumEPSS 12%

Medium (6.1) in nagios nagios xi. EPSS 12% chance of exploitation in the next 30 days.

The general user interface in Nagios XI versions prior to 5.8.4 is vulnerable to authenticated reflected cross-site scripting. An authenticated victim, who accesses a specially crafted malicious URL, would unknowingly execute the attached payload.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 12% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-10-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nagios:nagios_xi

References

https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi
https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi

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