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CVE-2026-48527

Estado: AplazadaAlta (8.7)—

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

XSS almacenado en endpoint `/system/api/saveNode` mediante bypass de sanitizador HTML. CWE-79 confirma XSS; vector CVSS con UI:R indica interacción del usuario para detonación, pero inyección autenticada es T1189 (drive-by).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentUser TrainingExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Haxcms — Haxcms PHPAIHaxtheweb — Haxcms NodejsAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-48527",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48527",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-05-29T13:02:45.553797Z"
        }
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          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 2.3
      }
    ]
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  "affected": [
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      "affectedData": [
        {
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          "product": "haxcms-nodejs",
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  "published": "2026-05-29T13:16:23.133",
  "references": [
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      "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue."
    },
    {
      "lang": "es",
      "value": "HAX CMS ayuda a gestionar el universo de micrositios con backends de PHP o NodeJs. Las versiones hasta la 26.0.0 inclusive están afectadas por una vulnerabilidad de cross-site scripting (XSS) almacenado en el endpoint `/system/api/saveNode`. Un usuario autenticado con permiso para editar páginas puede eludir el saneador HTML inyectando un atributo de gestor de eventos sin espacios en blanco antes del nombre del atributo. @haxtheweb/haxcms-nodejs 26.0.1 y haxcms-php 26.0.2 parchean el problema."
    }
  ],
  "lastModified": "2026-07-21T12:10:00.090",
  "sourceIdentifier": "security-advisories@github.com"
}