CVE-2026-86427

LibreNMS before 26.8.0 contains an argument injection vulnerability in the graph_title parameter . The root cause is the ability to break out of double-quote escaping, allowing authenticated attackers to inject arbitrary rrdtool arguments . This enables reading RRD files from unauthorized devices...

CVE-2026-86427 LibreNMS before 26.8.0 Argument Injection via graph_title

LibreNMS before 26.8.0 contains an argument injection vulnerability in the graphtitle parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by breaking out of double-quote escaping. Attackers can inject DEF and LINE arguments to read RRD files from unauthorized...

CVE-2026-86427 LibreNMS before 26.8.0 Argument Injection via graph_title

LibreNMS before 26.8.0 contains an argument injection vulnerability in the graphtitle parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by breaking out of double-quote escaping. Attackers can inject DEF and LINE arguments to read RRD files from unauthorized...

EUVD-2026-72384

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

CVE-2026-86426

LibreNMS before 26.8.0 contains an authentication bypass in its REST API caused by MySQL type coercion : unauthenticated attackers can send small integers (0–9) instead of string tokens, allowing them to match token hashes and access protected endpoints. Successful exploitation exposes device cre...

CVE-2026-86426 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

CVE-2026-86426 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

CVE-2026-86426 LibreNMS before 26.8.0 Authentication Bypass via API Token Type Confusion

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

PT-2026-86792

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

CVE-2026-86427: Improper Neutralization of Special Elements used in a Command

LibreNMS before 26.8.0 contains an argument injection vulnerability in the graphtitle parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by breaking out of double-quote escaping. Attackers can inject DEF and LINE arguments to read RRD files from unauthorized...

CVE-2026-86426: Improper Authentication

LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthenticated attackers to access protected endpoints by sending numeric values instead of string tokens. Attackers can exploit MySQL type coercion by sending small integers like 0 through 9 to...

PT-2026-86793

LibreNMS before 26.8.0 contains an argument injection vulnerability in the graph title parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by breaking out of double-quote escaping. Attackers can inject DEF and LINE arguments to read RRD files from unauthorized...

The vulnerability of the LibreNMS network monitoring system, related to the lack of protection for the website structure, allows attackers to perform cross-site scripting attacks (XSS) and increase their privileges.

The vulnerability of the LibreNMS network monitoring system is related to the lack of measures taken to protect the website structure. Exploiting this vulnerability allows a malicious actor to perform cross-site scripting attacks XSS and increase their privileges...

Command Injection

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 Command Injection in the libvirt discovery process when enablelibvirt is set to true. An attacker can execute arbitra...

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 in the rendering of SNMP VRF fields such as mplsVpnVrfDescription, vrfname, and...

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 in legacy PHP template pages that render unescaped SNMP-sourced data fields, including BGP...

CVE-2026-84194

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-2026-84189

LibreNMS through 26.4.0 renders JSON fields name, ip, model, author, commit message returned by the admin-configurable Oxidized integration URL oxidized.url into the device showconfig page without applying htmlspecialchars. An administrator who points the Oxidized URL at an attacker-controlled...

CVE-2026-84188

LibreNMS versions configuration settings, which are echoed verbatim without HTML escaping in includes/html/pages/graphs.inc.php. An administrator can store a malicious HTML payload that executes in the browser of any authenticated user who views the affected graph type. The issue is fixed in...

CVE-2026-84192

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...