{"id":"CVE-2026-86427","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-86427","summary":"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…","details":"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":"2026-09-07T13:20:41.870","modified":"2026-09-07T13:20:41.870","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/librenms/librenms/security/advisories/GHSA-3hvv-wxpw-cx83"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/librenms-before-26.8.0-argument-injection-via-graph-title"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-07T13:20:41.870"}}