CVE-2026-84194 LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Hostname

LibreNMS versions = 23.10.0 and getDevice-hostname is concatenated into shell commands ssh, virsh list/dumpxml/domstate in VminfoLibvirt.php and passed to exec without escapeshellarg or argument separation. An authenticated admin can set a crafted device hostname to inject arbitrary OS commands,...

CVE-2026-84192 LibreNMS before 26.3.1 Stored XSS via SNMP/Syslog Data

LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP-sourced and syslog-sourced data without escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript through SNMP interface descriptions or syslog...

CVE-2026-84192

LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP interface descriptions and syslog program fields without proper escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript that executes when aut...

CVE-2026-84192 LibreNMS before 26.3.1 Stored XSS via SNMP/Syslog Data

LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP-sourced and syslog-sourced data without escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript through SNMP interface descriptions or syslog...

EUVD-2026-69029

LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP-sourced and syslog-sourced data without escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript through SNMP interface descriptions or syslog...

CVE-2026-84192 LibreNMS before 26.3.1 Stored XSS via SNMP/Syslog Data

LibreNMS before 26.3.1 contains a stored cross-site scripting vulnerability in legacy PHP templates that output SNMP-sourced and syslog-sourced data without escaping. An attacker who controls a monitored network device can inject arbitrary JavaScript through SNMP interface descriptions or syslog...

EUVD-2026-69028

LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrfname, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary...

CVE-2026-84191 LibreNMS before 26.5.0 Stored XSS via SNMP VRF fields

LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrfname, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary...

CVE-2026-84191 LibreNMS before 26.5.0 Stored XSS via SNMP VRF fields

LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrfname, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary...

CVE-2026-84190 LibreNMS before 26.5.0 Remote Code Execution via AboutController

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shellexec without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable...

CVE-2026-84190 LibreNMS before 26.5.0 Remote Code Execution via AboutController

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shellexec without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable...

CVE-2026-84191

LibreNMS versions prior to 26.5.0 contain stored cross-site scripting (XSS) vulnerabilities in VRF display pages. The root cause is that SNMP-polled fields—mplsVpnVrfDescription , vrf_name , and mplsVpnVrfRouteDistinguisher —are rendered without sanitization. An attacker controlling a monitored n...

EUVD-2026-69027

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shellexec without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable...

CVE-2026-84190

LibreNMS versions before 26.5.0 are affected by a remote code execution vulnerability in the AboutController . The root cause is that the snmpget configuration parameter is passed to shell_exec() without proper validation, allowing an authenticated administrator to point this parameter to a malic...

CVE-2026-84191 LibreNMS before 26.5.0 Stored XSS via SNMP VRF fields

LibreNMS before 26.5.0 contains stored cross-site scripting vulnerabilities in VRF display pages where mplsVpnVrfDescription, vrfname, and mplsVpnVrfRouteDistinguisher fields from SNMP polling are rendered without sanitization. Attackers controlling a monitored network device can inject arbitrary...

CVE-2026-84190 LibreNMS before 26.5.0 Remote Code Execution via AboutController

LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shellexec without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable...

CVE-2026-84187 AVideo on_publish.php Missing Authentication Check via RTMP Callback

AVideo contains a missing authentication vulnerability in plugin/Live/onpublish.php that allows unauthenticated attackers to mark arbitrary scheduled broadcasts as failed by sending crafted POST requests with schedule identifiers. Attackers can exploit the unguarded RTMP callback endpoint to modi...

EUVD-2026-69024

AVideo contains a missing authentication vulnerability in plugin/Live/onpublish.php that allows unauthenticated attackers to mark arbitrary scheduled broadcasts as failed by sending crafted POST requests with schedule identifiers. Attackers can exploit the unguarded RTMP callback endpoint to modi...

CVE-2026-84187 AVideo on_publish.php Missing Authentication Check via RTMP Callback

AVideo contains a missing authentication vulnerability in plugin/Live/onpublish.php that allows unauthenticated attackers to mark arbitrary scheduled broadcasts as failed by sending crafted POST requests with schedule identifiers. Attackers can exploit the unguarded RTMP callback endpoint to modi...

CVE-2026-84187

AVideo contains a missing authentication vulnerability in the plugin/Live/on_publish.php RTMP callback endpoint. Unauthenticated attackers can send crafted POST requests with fabricated stream keys matching the pattern -ps- to mark arbitrary scheduled broadcasts as failed, effectively canceling l...