CVE-2026-109352

CVSS 6.1 (medium) · published 2026-10-12

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.

Weakness: CWE-79

Source: NVD CVE-2026-109352

References

• https://github.com/librenms/librenms/security/advisories/GHSA-ffjc-4fr5-47c6
• https://www.vulncheck.com/advisories/librenms-before-26.9.0-stored-xss-via-wireless-sensor-description
• https://github.com/librenms/librenms/security/advisories/GHSA-ffjc-4fr5-47c6

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