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 c…
Published: 2026-08-12 · CVSS: 7.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7