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VULNERABILITIES

CVE-2026-86427 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/librenms/librenms/security/advisories/GHSA-3hvv-wxpw-cx83 [email protected]ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/librenms-before-26.8.0-argument-injection-via-graph-title [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')[email protected]

Affected Products

ProductVersions
librenms librenms
< 26.8.0

CPE

  • cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-86427
NVD Published Date:
Sep 7, 2026
NVD Last Modified:
Sep 18, 2026
Source:
[email protected]
CVE-2026-86427 Details - Not Deferred