CVE-2026-109356

MEDIUM 4.3

LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

LibreNMS before 26.9.0 contains a missing authorization vulnerability in PortsController::purge that allows global-read users to physically delete ports without delete privileges. Attackers with read-only accounts can send DELETE requests to /ports/purge, using purge=all to irreversibly erase every deleted port on all visible devices.

CWE	CWE-862
Vendor	librenms
Product	librenms
Published	Oct 12, 2026

Stay Ahead of the Next One

Get instant alerts for librenms librenms

Be the first to know when new medium vulnerabilities affecting librenms librenms are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

librenms / librenms

0 < 26.9.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/librenms/librenms/security/advisories/GHSA-9qcg-rgg9-mpjg vulncheck.com: https://www.vulncheck.com/advisories/librenms-before-26.9.0-missing-authorization-in-port-purge-via-portscontroller