CVE-2026-84194

LibreNMS versions >= 23.10.0 and < 26.2.0 (fixed in 26.4.0) contain an authenticated OS command injection vulnerability in libvirt discovery. When libvirt support is enabled (enable_libvirt=true), the device hostname ($this->getDevice()->hostname) is concatenated into shell commands (ssh, virsh list/dumpxml/domstate) in VminfoLibvirt.php and passed to exec() without escapeshellarg() or argument separation. An authenticated admin can set a crafted device hostname to inject arbitrary OS commands, leading to remote code execution in the discovery worker context.

CVSS

No CVSS.

References

Link	Resource
https://github.com/librenms/librenms/security/advisories/GHSA-wff2-9gjr-95f3
https://www.vulncheck.com/advisories/librenms-23.10.0-before-26.4.0-os-command-injection-via-hostname
https://github.com/librenms/librenms/security/advisories/GHSA-wff2-9gjr-95f3

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 12:17

Updated : 2026-09-08 20:18

NVD link : CVE-2026-84194

Mitre link : CVE-2026-84194

CVE.ORG link : CVE-2026-84194

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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