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CVE-2025-71400

Estado: AplazadaAlta (7.1)—

better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys.

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 autenticado a servicio remoto (PR:L) sin interacción. Impacto: eliminación de factores de autenticación (passkeys) de otros usuarios, afectando disponibilidad y acceso de cuentas.

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 ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationDisable or Remove Feature or ProgramApplication Isolation and Sandboxing

Tecnologías afectadas (1)

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

Better-auth — Better-authAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2025-71400",
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        "ssvcData": {
          "id": "CVE-2025-71400",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
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    "cvssMetricV31": [
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          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "better-auth",
          "product": "passkey",
          "versions": [
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              "version": "0",
              "lessThan": "1.4.0",
              "versionType": "semver"
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  "published": "2026-08-02T13:16:52.387",
  "references": [
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      "url": "https://github.com/better-auth/better-auth/security/advisories/GHSA-4vcf-q4xf-f48m",
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/better-auth-passkey-before-idor-via-delete-passkey",
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  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
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          "value": "CWE-639"
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      "lang": "en",
      "value": "better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests to the delete-passkey endpoint with enumerated passkey IDs to remove other users' passkeys."
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    }
  ],
  "lastModified": "2026-09-29T14:10:00.117",
  "sourceIdentifier": "disclosure@vulncheck.com"
}