CVE-2026-26987

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b	Patch
https://github.com/librenms/librenms/pull/19038	Issue Tracking
https://github.com/librenms/librenms/releases/tag/26.2.0	Product Release Notes
https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:librenms:librenms:*:*:*:*:*:*:*:*

History

20 Feb 2026, 16:32

Type	Values Removed	Values Added
References	~~() https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b -~~	() https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b - Patch
References	~~() https://github.com/librenms/librenms/pull/19038 -~~	() https://github.com/librenms/librenms/pull/19038 - Issue Tracking
References	~~() https://github.com/librenms/librenms/releases/tag/26.2.0 -~~	() https://github.com/librenms/librenms/releases/tag/26.2.0 - Product, Release Notes
References	~~() https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr -~~	() https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr - Exploit, Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
First Time		Librenms librenms Librenms
CPE		cpe:2.3:a:librenms:librenms::::::::

20 Feb 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-20 02:16

Updated : 2026-02-20 16:32

NVD link : CVE-2026-26987

Mitre link : CVE-2026-26987

CVE.ORG link : CVE-2026-26987

JSON object : View

Products Affected

librenms

librenms

CWE

CWE-79

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

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