PT-2026-71173 · Nagios Enterprises+3 · Nagios Core+2
CVSS v4.0
7.7
High
| Vector | AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
Nagios Core versions prior to 4.5.14
Nagios XI versions prior to 2026R1.7
Description
Authenticated UI users can achieve remote code execution as the nagios user through unfiltered NOTIFICATION-family macro substitution via the
com data parameter. This occurs when a notification command references the $NOTIFICATIONCOMMENT$ or $NOTIFICATIONAUTHOR$ macros in a shell-reachable position. Exploitation is possible only in non-default configurations where these macros are used within a shell-executed command line.Recommendations
Update Nagios Core to version 4.5.14 or later.
Update Nagios XI to version 2026R1.7 or later.
Exploit
Fix
OS Command Injection
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Weakness Enumeration
Related Identifiers
Affected Products
Nagios Core
Nagios Xi
Nagios4