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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Librenms Librenms
cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*
|
— |
26.9.0
|
References 2
https://github.com/librenms/librenms/security/advisories/GHSA-9qcg-rgg9-mpjg
GitHub Security Advisory (GHSA-9qcg-rgg9-mpjg)
https://www.vulncheck.com/advisories/librenms-before-26.9.0-missing-authorizati…
VulnCheck Advisory: LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController