CVE-2026-26987

Published: Feb 20, 2026Modified: Feb 20, 2026

5.3

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: security-advisories@github.com (Secondary)

Description

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.

Affected (1)

Products: Librenms: Librenms

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Librenms Librenms	Before 26.2.0

Related CWEs

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

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (4)

https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b

Source: security-advisories@github.com

Patch

https://github.com/librenms/librenms/pull/19038

Source: security-advisories@github.com

Issue Tracking

https://github.com/librenms/librenms/releases/tag/26.2.0

Source: security-advisories@github.com

ProductRelease Notes

https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr

Source: security-advisories@github.com

ExploitThird Party Advisory

Timeline

No history available yet.