CVE-2026-84188

LibreNMS versions <= 26.4.0 contain a stored cross-site scripting vulnerability in the graph_descr.<graphtype> configuration settings, which are echoed verbatim without HTML escaping in includes/html/pages/graphs.inc.php. An administrator can store a malicious HTML payload that executes in the browser of any authenticated user who views the affected graph type. The issue is fixed in version 26.7.0.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/librenms/librenms/security/advisories/GHSA-7cj5-v4pp-v632
https://www.vulncheck.com/advisories/librenms-before-26.7.0-stored-xss-via-graph-descr-settings
https://github.com/librenms/librenms/security/advisories/GHSA-7cj5-v4pp-v632

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-01 12:17

Updated : 2026-09-08 20:18

NVD link : CVE-2026-84188

Mitre link : CVE-2026-84188

CVE.ORG link : CVE-2026-84188

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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