CVE-2026-26331

{
  "id": "CVE-2026-26331",
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          "id": "CVE-2026-26331",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-02-24T20:08:27.991642Z"
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        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 2.8
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      "affectedData": [
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          "vendor": "yt-dlp",
          "product": "yt-dlp",
          "versions": [
            {
              "status": "affected",
              "version": ">= 2023.06.21, < 2026.02.21"
            }
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  "published": "2026-02-24T03:16:01.710",
  "references": [
    {
      "url": "https://github.com/yt-dlp/yt-dlp/commit/1fbbe29b99dc61375bf6d786f824d9fcf6ea9c1a",
      "tags": [
        "Patch"
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    {
      "url": "https://github.com/yt-dlp/yt-dlp/releases/tag/2026.02.21",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-g3gw-q23r-pgqm",
      "tags": [
        "Exploit",
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        "Vendor Advisory"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "yt-dlp is a command-line audio/video downloader. Starting in version 2023.06.21 and prior to version 2026.02.21, when yt-dlp's `--netrc-cmd` command-line option (or `netrc_cmd` Python API parameter) is used, an attacker could achieve arbitrary command injection on the user's system with a maliciously crafted URL. yt-dlp maintainers assume the impact of this vulnerability to be high for anyone who uses `--netrc-cmd` in their command/configuration or `netrc_cmd` in their Python scripts. Even though the maliciously crafted URL itself will look very suspicious to many users, it would be trivial for a maliciously crafted webpage with an inconspicuous URL to covertly exploit this vulnerability via HTTP redirect. Users without `--netrc-cmd` in their arguments or `netrc_cmd` in their scripts are unaffected. No evidence has been found of this exploit being used in the wild. yt-dlp version 2026.02.21 fixes this issue by validating all netrc \"machine\" values and raising an error upon unexpected input. As a workaround, users who are unable to upgrade should avoid using the `--netrc-cmd` command-line option (or `netrc_cmd` Python API parameter), or they should at least not pass a placeholder (`{}`) in their `--netrc-cmd` argument."
    },
    {
      "lang": "es",
      "value": "yt-dlp es un descargador de audio/vídeo de línea de comandos. A partir de la versión 2023.06.21 y antes de la versión 2026.02.21, cuando se utiliza la opción de línea de comandos '--netrc-cmd' de yt-dlp (o el parámetro de API de Python 'netrc_cmd'), un atacante podría lograr una inyección de comandos arbitraria en el sistema del usuario con una URL creada maliciosamente. Los encargados del mantenimiento de yt-dlp asumen que el impacto de esta vulnerabilidad es alto para cualquiera que use '--netrc-cmd' en su comando/configuración o 'netrc_cmd' en sus scripts de Python. Aunque la URL creada maliciosamente en sí parecerá muy sospechosa para muchos usuarios, sería trivial explotar encubiertamente esta vulnerabilidad a través de una redirección HTTP para una página web creada maliciosamente con una URL discreta . Los usuarios sin '--netrc-cmd' en sus argumentos o 'netrc_cmd' en sus scripts no se ven afectados. No se ha encontrado evidencia de que este exploit se esté utilizando. La versión 2026.02.21 de yt-dlp soluciona este problema validando todos los valores de 'machine' de netrc y generando un error ante una entrada inesperada. Como solución alternativa, los usuarios que no puedan actualizarse deben evitar usar la opción de línea de comandos '--netrc-cmd' (o el parámetro de API de Python 'netrc_cmd'), o al menos no deben pasar un marcador de posición ('{}') en su argumento '--netrc-cmd'."
    }
  ],
  "lastModified": "2026-06-17T10:26:06.463",
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