CVE-2026-86427
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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 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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| librenms | librenms | 0 < 26.8.0 | affected |
| librenms | librenms | 26.8.0 | unaffected |
Weaknesses
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
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-title
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