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CVE-2025-62166

Estado: AnalizadaAlta (7.5)—

FreshRSS is a free, self-hostable RSS aggregator. Prior 1.28.0, a bug in the auth logic related to master authentication tokens, this restriction is bypassed. Usually only the default user's feed should be viewable if anonymous viewing is enabled, and feeds of other users should be private. This vulnerability is fixed in 1.28.0.

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).

🎯 Técnicas ATT&CK

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

Fallo en lógica de autenticación de tokens (CWE-284) en servicio web remoto sin autenticación previa (AV:N, PR:N), permitiendo acceso a datos privados de otros usuarios sin autorización.

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

Vulnerability ScanningPrivileged Account ManagementPassword PoliciesNetwork SegmentationMulti-factor AuthenticationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Freshrss — Freshrss

CWE

Referencias

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{
  "id": "CVE-2025-62166",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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          "id": "CVE-2025-62166",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
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              "automatable": "yes"
            },
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              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-09T20:39:25.834635Z"
        }
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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      "source": "security-advisories@github.com",
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            }
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  "published": "2026-03-09T20:16:01.320",
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      "url": "https://github.com/FreshRSS/FreshRSS/releases/tag/1.28.0",
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      "description": [
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          "value": "CWE-639"
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  "descriptions": [
    {
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      "value": "FreshRSS is a free, self-hostable RSS aggregator. Prior 1.28.0, a bug in the auth logic related to master authentication tokens, this restriction is bypassed. Usually only the default user's feed should be viewable if anonymous viewing is enabled, and feeds of other users should be private. This vulnerability is fixed in 1.28.0."
    },
    {
      "lang": "es",
      "value": "FreshRSS es un agregador RSS gratuito y autoalojable. Antes de la 1.28.0, un error en la lógica de autenticación relacionado con los tokens de autenticación maestros, esta restricción es eludida. Normalmente, solo la fuente del usuario predeterminado debería ser visible si la visualización anónima está habilitada, y las fuentes de otros usuarios deberían ser privadas. Esta vulnerabilidad está corregida en la 1.28.0."
    }
  ],
  "lastModified": "2026-06-17T09:51:29.380",
  "configurations": [
    {
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              "versionEndExcluding": "1.28.0"
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  "sourceIdentifier": "security-advisories@github.com"
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