CyberRota Analysis
AI-GeneratedLibreNMS versions 21.6.0 to 26.5.0 are vulnerable to command injection via the Signal alert transport, allowing authenticated administrators to exploit insufficiently escaped input in the Recipient field and the signal-cli path. This vulnerability enables the execution of arbitrary operating-system commands on the LibreNMS host, posing a significant security risk. Organizations using affected versions should prioritize upgrading to version 26.5.0 or later to mitigate this high-severity threat.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
LibreNMS is a network monitoring system. In versions from 21.6.0 up to 26.5.0, the Signal alert transport is vulnerable to command injection because the signal-cli path and the Recipient field of an alert transport entry are insufficiently escaped before being passed to an exec call. An authenticated administrator can craft a transport entry whose Recipient contains shell metacharacters and whose path points to the bundled composer_wrapper.php script, which itself passes attacker-controlled input to further unsafe exec calls. By chaining these calls, the administrator can execute arbitrary operating-system commands on the LibreNMS host. This issue is fixed in version 26.5.0.