CVE-2026-109352LibreNMS before 26.9.0 Stored XSS via wireless sensor description
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
librenms librenms librenms:librenms (from the name) | before 26.9.0; 26.9.0 not affected | CNA record |
References
- https://github.com/librenms/librenms/security/advisories/GHSA-ffjc-4fr5-47c6vendor-advisory
- https://www.vulncheck.com/advisories/librenms-before-26.9.0-stored-xss-via-wireless-sensor-descriptionthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.