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CVE-2026-107697

Estado: AnalizadaMedia (5.3)—

FFmpeg anterior a la 8.1.3 contiene un fallo del mecanismo de protección en el demultiplexor HLS que permite a los atacantes eludir las restricciones de protocol y allowed_extensions al abrir listas de reproducción secundarias. Los atacantes pueden proporcionar una lista de reproducción maestra manipulada cuyas listas secundarias utilicen protocolos no permitidos o archivos locales que no son multimedia, haciendo que parse_playlist() abra recursos que la política de seguridad de HLS debería bloquear.

Traducción automática del texto original de NVD (en inglés).

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.

Vector CVSS con UI:P (interacción usuario: abrir archivo/playlist preparado). FFmpeg parsea playlist malformada, accede a recursos bloqueados (T1005) y puede manipular datos multimedia (T1565.001).

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 File and Directory PermissionsRemote Data StorageEncrypt Sensitive InformationApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Ffmpeg — Ffmpeg

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-107697",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-107697",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-14T14:53:30.618812Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 5.3,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/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": "PASSIVE",
          "attackComplexity": "LOW",
          "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": "LOW",
          "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": "disclosure@vulncheck.com",
      "affectedData": [
        {
          "repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
          "vendor": "FFmpeg",
          "product": "FFmpeg",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "8.1.3",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:github/ffmpeg/ffmpeg",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-08T18:17:26.300",
  "references": [
    {
      "url": "https://github.com/FFmpeg/FFmpeg",
      "tags": [
        "Product"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/blob/n8.1.2/libavformat/hls.c#L834",
      "tags": [
        "Product"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/01044d04536e",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/191715f0232c",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://github.com/FFmpeg/FFmpeg/commit/23602df9cd1b485c45ba6f533d3b85569de3f323",
      "tags": [
        "Patch"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.vulncheck.com/advisories/ffmpeg-before-8.1.3-hls-demuxer-security-check-bypass-via-parse-playlist",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FFmpeg before 8.1.3 contains a protection mechanism failure in the HLS demuxer that allows attackers to bypass protocol and allowed_extensions restrictions when opening child playlists. Attackers can supply a crafted master playlist whose child playlists use disallowed protocols or non-multimedia local files, making parse_playlist() open resources the HLS security policy should block."
    }
  ],
  "lastModified": "2026-10-15T00:01:45.480",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DAB05348-0476-40F8-AF10-7843F75FA84F",
              "versionEndExcluding": "8.1.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com"
}