CVE-2021-35479

5.4 mediumEPSS 13%

Medium (5.4) in nagios log server. EPSS 13% chance of exploitation in the next 30 days.

Nagios Log Server before 2.1.9 contains Stored XSS in the custom column view for the alert history and audit log function through the affected pp parameter. This affects users who open a crafted link or third-party web page.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 13% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-07-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nagios:log_server

References

https://research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vulnerability-in-nagios-log-server-cve-2021-35478cve-2021-35479/
https://research.nccgroup.com/?research=Technical%20advisories
https://www.nagios.com/downloads/nagios-log-server/change-log/
https://research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vulnerability-in-nagios-log-server-cve-2021-35478cve-2021-35479/
https://research.nccgroup.com/?research=Technical%20advisories

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