CVE-2026-48554
7.7
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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 requires a non-default configuration in which a notification command references these macros in a shell-executed command line.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Nagios Enterprises, LLC. | Nagios Core | 0 < 4.5.14 | affected |
| Nagios Enterprises, LLC. | Nagios XI | 0 < 2026R1.7 | affected |
Weaknesses
- CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://www.nagios.com/security-disclosures/nagios-core/
- https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog
- https://www.vulncheck.com/advisories/nagios-core-xi-authenticated-rce-via-unfiltered-notification-family-macro-substitution
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