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CVE-2026-109352— LibreNMS before 26.9.0 Stored XSS via wireless sensor description

Quick assessment

Affected
librenms librenms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在版本 26.9.0 之前的 LibreNMS 中，文件 includes/html/pages/device/wireless.inc.php 存在存储型跨站脚本（XSS）漏洞。该漏洞会在设备发现过程中，从 SNMP DisplayString 字段获取无线传感器描述值（sensor_descr），并将其未经验证和转义地直接输出到 HTML 页面中。攻击者若控制了被监控设备的 SNMP 代理，便可将恶意 JavaScript 代码植入如 AI-AP-MIB::aiSSID 等 SNMP 字段中。当经过身份验证的用

CVSS 6.1 · Medium EPSS 0.20% · P9

Affected Version Matrix 2

VendorProduct Version RangeStatus
librenms librenms < 26.9.0 affected
26.9.0 unaffected
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I. Basic Information for CVE-2026-109352

Vulnerability Information
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Vulnerability Title
LibreNMS before 26.9.0 Stored XSS via wireless sensor description
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
librenms librenms 0 ~ 26.9.0 -

II. Public POCs for CVE-2026-109352

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III. Intelligence Information for CVE-2026-109352

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Vendor Advisories for CVE-2026-109352 (1)

Other References for CVE-2026-109352 (1)

Same Patch Batch · librenms · 2026-10-12 · 6 CVEs total

CVE-2026-109357 8.1 HIGH LibreNMS before 26.9.0 LDAP Filter Injection Authentication Bypass via Authorization Heade
CVE-2026-109353 7.1 HIGH LibreNMS before 26.9.0 SQL Injection via notification_id in notifications.inc.php
CVE-2026-109355 6.1 MEDIUM LibreNMS before 26.9.0 Stored XSS via Tools Oxidized Node List
CVE-2026-109356 4.3 MEDIUM LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController
CVE-2026-109354 4.3 MEDIUM LibreNMS before 26.9.0 Path Traversal via NFSen channel Parameter

IV. Related Vulnerabilities

Same product: librenms
Same vendor: librenms
Same weakness: CWE-79

V. Comments for CVE-2026-109352

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