HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-48554 — Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to authen...

·Source: NIST NVD

Updated:

Executive Summary

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 requi

Analysis

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. CVSS Score: 7.5. Published: 2026-08-12T17:17:27.840.

Indicators of Compromise (1)

CVE (1)
CVE-2026-48554
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Aug 12, 2026. Verified by: NIST.

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