Is CVE-2026-109352 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109352?

CVE-2026-109352 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-109352

Description

LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in includes/html/pages/device/wireless.inc.php, which echoes wireless sensor sensor_descr values, populated from SNMP DisplayString fields during discovery, into HTML without escaping. Attackers controlling a monitored device's SNMP agent can set values such as AI-AP-MIB::aiSSID to malicious JavaScript that executes when authenticated users view the device's Wireless tab, enabling session hijacking.