CVE-2026-48554
HIGH
7,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH
7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
StableCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Availability
Non-Repudiation
Potential Impacts:
Execute Unauthorized Code Or Commands
Dos: Crash, Exit, Or Restart
Read Files Or Directories
Modify Files Or Directories
Read Application Data
Modify Application Data
Hide Activities
Applicable Platforms
Technologies:
Not Technology-Specific, AI/ML, Web Server
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-unfil…