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CVE-2025-68402

Estado: AplazadaAlta (8.2)—

FreshRSS is a free, self-hostable RSS aggregator. From 57e1a37 - 00f2f04, the lengths of the nonce was changed from 40 chars to 64. password_verify() is currently being called with a constructed string (SHA-256 nonce + part of a bcrypt hash) instead of the raw user password. Due to bcrypt’s 72-byte input truncation, this causes password verification to succeed even when the user enters an incorrect password. This vulnerability is fixed in 1.27.2-dev (476e57b). The issue was only present in the edge branch and never in a stable release.

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.

Acceso remoto sin autenticación válida (CWE-287: fallo de verificación) mediante bypass de contraseña por truncamiento de bcrypt en FreshRSS autohospedado expuesto.

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

Privileged Account ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (1)

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

Freshrss — FreshrssAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-68402",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68402",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-09T20:38:50.441218Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.2,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "FreshRSS",
          "product": "FreshRSS",
          "versions": [
            {
              "status": "affected",
              "version": "< 476e57b04646416e24e24c56133c9fadf9e52b95"
            }
          ]
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  ],
  "published": "2026-03-09T20:16:01.963",
  "references": [
    {
      "url": "https://github.com/FreshRSS/FreshRSS/commit/476e57b04646416e24e24c56133c9fadf9e52b95",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreshRSS/FreshRSS/pull/8061",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreshRSS/FreshRSS/pull/8320",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/FreshRSS/FreshRSS/security/advisories/GHSA-pcq9-mq6m-mvmp",
      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
        {
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          "value": "CWE-287"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FreshRSS is a free, self-hostable RSS aggregator. From 57e1a37 - 00f2f04, the lengths of the nonce was changed from 40 chars to 64. password_verify() is currently being called with a constructed string (SHA-256 nonce + part of a bcrypt hash) instead of the raw user password. Due to bcrypt’s 72-byte input truncation, this causes password verification to succeed even when the user enters an incorrect password. This vulnerability is fixed in 1.27.2-dev (476e57b). The issue was only present in the edge branch and never in a stable release."
    },
    {
      "lang": "es",
      "value": "FreshRSS es un agregador RSS gratuito y autoalojable. Desde 57e1a37 - 00f2f04, la longitud del nonce se cambió de 40 caracteres a 64. password_verify() se está llamando actualmente con una cadena construida (nonce SHA-256 + parte de un hash bcrypt) en lugar de la contraseña de usuario sin procesar. Debido a la truncación de entrada de 72 bytes de bcrypt, esto provoca que la verificación de la contraseña tenga éxito incluso cuando el usuario introduce una contraseña incorrecta. Esta vulnerabilidad está corregida en 1.27.2-dev (476e57b). El problema solo estuvo presente en la rama 'edge' y nunca en una versión estable."
    }
  ],
  "lastModified": "2026-06-17T09:59:03.590",
  "sourceIdentifier": "security-advisories@github.com"
}