CVE-2026-109356

LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController

State: Published
Severity: 5.3 Medium
Published: Oct 12, 2026
Updated: Oct 26, 2026
Reserved: Oct 12, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	VulnCheck

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
librenmslibrenms	before 26.9.0Affected 26.9.0Not affected

References

GitHub Security Advisory (GHSA-9qcg-rgg9-mpjg)vendor-advisory
VulnCheck Advisory: LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsControllerthird-party-advisory

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