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High · 8.8 CVE-2026-86427 EUVD-2026-72385GHSA-j7jc-m6xg-rrcw

LibreNMS before 26.8.0 Argument Injection via graph_title

Published Sep 7, 2026 · Updated Sep 10, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
librenms librenms < 26.8.0 26.8.0

References