Detections
Analytics
CVE-2026-26989
medium
Description
LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are affected by a Stored Cross-Site Scripting (XSS) vulnerability in the Alert Rules workflow. An attacker with administrative privileges can inject malicious scripts that execute in the browser context of any user who accesses the Alert Rules page. This issue has been fixed in version 26.2.0.
References
https://github.com/librenms/librenms/security/advisories/GHSA-6xmx-xr9p-58p7
https://github.com/librenms/librenms/releases/tag/26.2.0
https://github.com/librenms/librenms/pull/19039
https://github.com/librenms/librenms/commit/087608cf9f851189847cb8e8e5ad002e59170c58