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CVE-2026-109356GHSA-9qcg-rgg9-mpjg

LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController

librenms librenms
Open in ThreatlineRecord JSON
CVSS
5.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in26.9.0Fixed versionCVE List
Published12 Oct 2026Updated 12 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 2

  • librenmsaffected: all versions before 26.9.0CVE List
  • librenmsunaffected: 26.9.0CVE List

References 2