LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is… (CVE-2026-84190)
Description
LibreNMS versions before 26.5.0 have a remote code execution vulnerability in the AboutController. This occurs because the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can exploit this by modifying the snmpget configuration to execute arbitrary code via the /about endpoint.
CVSS v3.1
Score 7.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in LibreNMS (CVE-2026-84190) affects versions prior to 26.5.0. It arises from improper validation of the snmpget configuration parameter in the AboutController, which is passed directly to the shell_exec() function. This allows an authenticated administrator to specify a malicious executable, leading to remote code execution when the /about endpoint is accessed.
Potential Impact
Successful exploitation allows an authenticated administrator to execute arbitrary code on the affected system, potentially leading to full system compromise. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
A fix is available in LibreNMS version 26.5.0. Users should upgrade to version 26.5.0 or later to remediate this vulnerability. No vendor advisory was provided in the input, so check the official LibreNMS resources for confirmation and further guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-p7jp-qp65-h4xf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-84190"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a96f309acd9273b49e4910e
Added to database: 09/01/2026, 15:45:13 UTC
Last enriched: 09/07/2026, 21:37:30 UTC
Last updated: 10/15/2026, 06:48:19 UTC
Views: 39
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