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 graph_title parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by bre…
Published: 2026-09-07 · CVSS: 8.7 · CVSS 4.0
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 devices, or use newline injection to execute arbitrary rrdtool commands, bypassing per-device authorization checks.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7