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CVE-2026-33638

Estado: AnalizadaMedia (5.3)—

Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0.

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)

Ech0 — Ech0

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-33638",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "ssvcData": {
          "id": "CVE-2026-33638",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-27T20:18:24.196051Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
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        "exploitabilityScore": 3.9
      }
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "lin-snow",
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          "versions": [
            {
              "status": "affected",
              "version": "< 4.2.0"
            }
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  ],
  "published": "2026-03-26T21:17:07.467",
  "references": [
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      "url": "https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681",
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  "vulnStatus": "Analyzed",
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      "description": [
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          "value": "CWE-862"
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      "lang": "en",
      "value": "Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0."
    },
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      "lang": "es",
      "value": "Ech0 es una plataforma de publicación de código abierto y autoalojada para compartir ideas personales. Antes de la versión 4.2.0, `GET /api/allusers` está montado como un endpoint público y devuelve registros de usuario sin autenticación. Esto permite la enumeración remota de usuarios no autenticados y la exposición de metadatos de perfil de usuario. Una solución está disponible en la v4.2.0."
    }
  ],
  "lastModified": "2026-06-17T10:37:49.680",
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    {
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        {
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