CVE-2026-48554 Nagios Core / XI Authenticated RCE via Unfiltered NOTIFICATION-Family Macro Substitution

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 comdata parameter. When a notification command references $NOTIFICATIONCOMMENT$ or $NOTIFICATIONAUTHOR$ in a...