Security Advisory
CVE-2026-86427
CVSS 8.8
HIGH
Vulnerability Description
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.
Published Date
2026-09-07T13:20:41.870
Data Feed
NIST National Vulnerability Database