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CVE-2026-26975

Estado: AnalizadaAlta (8.8)—

Music Assistant is an open-source media library manager that integrates streaming services with connected speakers. Versions 2.6.3 and below allow unauthenticated network-adjacent attackers to execute arbitrary code on affected installations. The music/playlists/update API allows users to bypass the .m3u extension enforcement and write files anywhere on the filesystem, which is exacerbated by the container running as root. This can be exploited to achieve Remote Code Execution by writing a malicious .pth file to the Python site-packages directory, which will execute arbitrary commands when Python loads. This issue has been fixed in version 2.7.0.

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.

AV:A + acceso red sin privilegios a API no autenticada para escribir archivos arbitrarios (.pth) en Python site-packages, ejecutándose como root. CWE-22 (path traversal) y CWE-434 (upload inseguro) confirman escritura maliciosa que logra RCE y escalada.

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

Tecnologías afectadas (1)

CWE

Referencias

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{
  "id": "CVE-2026-26975",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-26975",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-20T15:29:20.943551Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "music-assistant",
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          "versions": [
            {
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            }
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  ],
  "published": "2026-02-20T01:16:00.273",
  "references": [
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      "tags": [
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      "tags": [
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/music-assistant/server/security/advisories/GHSA-7jcc-p6xr-835j",
      "tags": [
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        "Vendor Advisory"
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      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-73"
        },
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Music Assistant is an open-source media library manager that integrates streaming services with connected speakers. Versions 2.6.3 and below allow unauthenticated network-adjacent attackers to execute arbitrary code on affected installations. The music/playlists/update API allows users to bypass the .m3u extension enforcement and write files anywhere on the filesystem, which is exacerbated by the container running as root. This can be exploited to achieve Remote Code Execution by writing a malicious .pth file to the Python site-packages directory, which will execute arbitrary commands when Python loads. This issue has been fixed in version 2.7.0."
    },
    {
      "lang": "es",
      "value": "Music Assistant es un gestor de biblioteca de medios de código abierto que integra servicios de streaming con altavoces conectados. Las versiones 2.6.3 e inferiores permiten a atacantes adyacentes a la red no autenticados ejecutar código arbitrario en las instalaciones afectadas. La API music/playlists/update permite a los usuarios eludir la aplicación de la extensión .m3u y escribir archivos en cualquier lugar del sistema de archivos, lo cual se ve exacerbado por el contenedor que se ejecuta como root. Esto puede ser explotado para lograr la ejecución remota de código escribiendo un archivo .pth malicioso en el directorio site-packages de Python, lo que ejecutará comandos arbitrarios cuando Python cargue. Este problema ha sido solucionado en la versión 2.7.0."
    }
  ],
  "lastModified": "2026-06-17T10:26:28.317",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:music-assistant:music_assistant_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "740926C1-C4E2-4E42-A880-6326746DC251",
              "versionEndExcluding": "2.7.0"
            }
          ],
          "operator": "OR"
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      ]
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  "sourceIdentifier": "security-advisories@github.com"
}