HIGH 8.7 NVD
CVE-2026-86427
LibreNMS before 26.8.0 contains an argument injection vulnerability in the graph_title parameter that allows authenticated attackers to inject arbitrary rrdtool
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.
References
- https://github.com/librenms/librenms/security/advisories/GHSA-3hvv-wxpw-cx83
- https://www.vulncheck.com/advisories/librenms-before-26.8.0-argument-injection-via-graph-t
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-07 via NVD.
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