Command Injection Affecting NagiosEnterprises/nagioscore package, versions [,4.5.14)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-NAGIOSENTERPRISESNAGIOSCORE-19427810
- published29 Aug 2026
- disclosed12 Aug 2026
- creditUnknown
Introduced: 12 Aug 2026
NewCVE-2026-48554 (opens in a new tab)How to fix?
Upgrade NagiosEnterprises/nagioscore to version 4.5.14 or higher.
Overview
Affected versions of this package are vulnerable to Command Injection through unfiltered macro substitution in the com_data parameter. An attacker can execute arbitrary commands as the nagios user by crafting notification commands that reference $NOTIFICATIONCOMMENT$ or $NOTIFICATIONAUTHOR$ in a shell-reachable position. This is only exploitable if a non-default configuration is used in which a notification command references these macros in a shell-executed command line.