HIGHVulnerability
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 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.
Properties
- severity
- HIGH
- score
- 8.8
- cve_id
- CVE-2026-86427
- signal_observed_at
- 2026-09-16T21:37:07+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-09-07T13:20:41.870
- last_modified
- 2026-09-10T16:18:02.673
Related Entities (2)
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Special Elements used in a Command ('Command Injection')
DESCRIBED_BY (1)
→[Source]NVD
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