CVE-2026-26987mediumCWE-79

CVE-2026-26987: medium-severity vulnerability in librenms

LibreNMS affected by reflected XSS via email field

Published

Follow this CVE+ Monitor librenms+ Monitor librenms/librenms

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
librenms · librenms
Related CVEs — librenms

In the same product, most dangerous first.

CVE-2024-49754HIGHLibreNMS has a stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/api-access.inc.phpEPSS 73.9%CVE-2025-23200MEDIUMStored XSS-LibreNMS-Misc Section in librenmsEPSS 49.3%CVE-2024-50352MEDIUMLibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/overview/services.inc.phpEPSS 41.4%CVE-2024-32479HIGHLibreNMS's Improper Sanitization on Service template name leads to Stored XSSEPSS 34.1%CVE-2024-47525HIGHStored XSS ('Cross-site Scripting') in librenms/includes/html/print-alert-rules.phpEPSS 29.6%CVE-2024-32480HIGHLibreNMS's Time-Based Blind SQL injection leads to database extractionEPSS 20.3%