CVE-2026-55182 LibreNMS: Remote Code Execution by Signal Alert Transportation Module

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...

CVE-2026-55182 LibreNMS: Remote Code Execution by Signal Alert Transportation Module

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...

CVE-2026-55182

LibreNMS , a network monitoring system, is vulnerable to command injection in the Signal alert transport module (versions 21.6.0 through 26.5.0). The root cause lies in insufficiently escaped signal-cli path and Recipient field in the deliverAlert function of Signal.php, which are passed to unsaf...

LibreNMS Vulnerable to Remote Code Execution by Signal Alert Transportation module

Summary A vulnerability has been identified that allows an authenticated administrator to execute arbitrary code on the host server. By adding an alert transport entry, an attacker with administrative privileges can execute malicious commands. Details The vulnerability is caused by an unsafe exec...

EUVD-2025-34785

LibreNMS is a community-based GPL-licensed network monitoring system. LibreNMS = 25.8.0 contains a Stored Cross-Site Scripting XSS vulnerability in the Alert Transports management functionality. When an administrator creates a new Alert Transport, the value of the Transport name field is stored a...

CVE-2025-62411 Stored XSS in Alert Transport name field in LibreNMS

LibreNMS is a community-based GPL-licensed network monitoring system. LibreNMS = 25.8.0 contains a Stored Cross-Site Scripting XSS vulnerability in the Alert Transports management functionality. When an administrator creates a new Alert Transport, the value of the Transport name field is stored a...

CVE-2025-62411 Stored XSS in Alert Transport name field in LibreNMS

LibreNMS is a community-based GPL-licensed network monitoring system. LibreNMS = 25.8.0 contains a Stored Cross-Site Scripting XSS vulnerability in the Alert Transports management functionality. When an administrator creates a new Alert Transport, the value of the Transport name field is stored a...

Cross-site Scripting (XSS)

Overview librenms/librenms is a fully featured network monitoring system that provides a wealth of features and device support. Affected versions of this package are vulnerable to Cross-site Scripting XSS through the Details field in the Alert Transport feature. Details Cross-site scripting or XS...