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CVE-2025-55296

Estado: AnalizadaMedia (5.4)—

librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Librenms — Librenms

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-55296",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-55296",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-18T17:37:45.472075Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
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          "versions": [
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              "version": "< 25.8.0"
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  "published": "2025-08-18T18:15:39.810",
  "references": [
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      "url": "https://github.com/librenms/librenms/commit/8ade3d827d317f5ac4b336617aafff865f825958",
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      "tags": [
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        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
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      "lang": "en",
      "value": "librenms is a community-based GPL-licensed network monitoring system. A stored Cross-Site Scripting (XSS) vulnerability exists in LibreNMS (<= 25.6.0) in the Alert Template creation feature. This allows a user with the admin role to inject malicious JavaScript, which will be executed when the template is rendered, potentially compromising other admin accounts. This vulnerability is fixed in 25.8.0."
    },
    {
      "lang": "es",
      "value": "LibreNMS es un sistema de monitorización de red comunitario con licencia GPL. Existe una vulnerabilidad de Cross-Site Scripting (XSS) almacenado en LibreNMS (versión anterior a la 25.6.0) en la función de creación de plantillas de alerta. Esto permite que un usuario con rol de administrador inyecte JavaScript malicioso, que se ejecutará al renderizar la plantilla, lo que podría comprometer otras cuentas de administrador. Esta vulnerabilidad se ha corregido en la versión 25.8.0."
    }
  ],
  "lastModified": "2026-06-17T09:41:36.243",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "25.8.0"
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  "sourceIdentifier": "security-advisories@github.com"
}