HIGH 7.7 NVD
CVE-2026-48554
Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to authenticated remote code execution via unfiltered NOTIFICATION-family macro substitut
Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to authenticated remote code execution via unfiltered NOTIFICATION-family macro substitution through the com_data parameter. When a notification command references $NOTIFICATIONCOMMENT$ or $NOTIFICATIONAUTHOR$ in a shell-reachable position, authenticated UI users can run arbitrary commands as the nagios user. Exploitation requires a non-default configuration in which a notification command references these macros in a shell-executed command line.
References
- https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog
- https://www.nagios.com/security-disclosures/nagios-core/
- https://www.vulncheck.com/advisories/nagios-core-xi-authenticated-rce-via-unfiltered-notif
This high severity vulnerability with a CVSS score of 7.7 was published on 2026-08-12 via NVD.
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