{
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                "options": [
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                  {
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                "role": "CISA Coordinator",
                "timestamp": "2024-07-02T15:17:37.665466Z",
                "version": "2.0.3"
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            "url": "https://github.com/dirkf/youtube-dl/security/advisories/GHSA-22fp-mf44-f2mq"
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            "url": "https://github.com/ytdl-org/youtube-dl/commit/d42a222ed541b96649396ef00e19552aef0f09ec"
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        "title": "CVE Program Container"
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          "vendor": "yt-dlp",
          "versions": [
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              "versionType": "date"
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          "vendor": "ytdl-org",
          "versions": [
            {
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              "status": "affected",
              "version": "\u003e= 2015.01.25",
              "versionType": "date"
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                  "status": "unaffected"
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              "lessThan": "2024-07-03",
              "status": "affected",
              "version": "nightly",
              "versionType": "date"
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      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e`yt-dlp` and `youtube-dl` are command-line audio/video downloaders. Prior to the fixed versions,\u0026nbsp;`yt-dlp` and `youtube-dl` do not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path traversal on Windows). Since `yt-dlp` and `youtube-dl` also read config from the working directory (and on Windows executables will be executed from the `yt-dlp` or `youtube-dl` directory), this could lead to arbitrary code being executed.\u003c/p\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003e`yt-dlp` version 2024.07.01 fixes this issue by whitelisting the allowed extensions. `youtube-dl` fixes this issue in commit `d42a222` on the `master` branch and in nightly builds tagged 2024-07-03 or later. This might mean some very uncommon extensions might not get downloaded, however it will also limit the possible exploitation surface. In addition to upgrading, have `.%(ext)s` at the end of the output template and make sure the user trusts the websites that they are downloading from. Also, make sure to never download to a directory within PATH or other sensitive locations like one\u0027s user directory, `system32`, or other binaries locations. For users who are not able to upgrade, keep the default output template (`-o \"%(title)s [%(id)s].%(ext)s`); make sure the extension of the media to download is a common video/audio/sub/... one; try to avoid the generic extractor; and/or use `--ignore-config --config-location ...` to not load config from common locations.\u003c/p\u003e"
            }
          ],
          "value": "`yt-dlp` and `youtube-dl` are command-line audio/video downloaders. Prior to the fixed versions,\u00a0`yt-dlp` and `youtube-dl` do not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path traversal on Windows). Since `yt-dlp` and `youtube-dl` also read config from the working directory (and on Windows executables will be executed from the `yt-dlp` or `youtube-dl` directory), this could lead to arbitrary code being executed.\n\n\n\n\n`yt-dlp` version 2024.07.01 fixes this issue by whitelisting the allowed extensions. `youtube-dl` fixes this issue in commit `d42a222` on the `master` branch and in nightly builds tagged 2024-07-03 or later. This might mean some very uncommon extensions might not get downloaded, however it will also limit the possible exploitation surface. In addition to upgrading, have `.%(ext)s` at the end of the output template and make sure the user trusts the websites that they are downloading from. Also, make sure to never download to a directory within PATH or other sensitive locations like one\u0027s user directory, `system32`, or other binaries locations. For users who are not able to upgrade, keep the default output template (`-o \"%(title)s [%(id)s].%(ext)s`); make sure the extension of the media to download is a common video/audio/sub/... one; try to avoid the generic extractor; and/or use `--ignore-config --config-location ...` to not load config from common locations."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-669",
              "description": "CWE-669 Incorrect Resource Transfer Between Spheres",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2024-07-03T23:32:13.285Z",
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          "name": "https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01",
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          "url": "https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01"
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          "name": "https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp",
          "tags": [
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          "url": "https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp"
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      "source": {
        "advisory": "GHSA-79w7-vh3h-8g4j",
        "discovery": "UNKNOWN"
      },
      "title": "yt-dlp and youtube-dl vulnerable to file system modification and RCE through improper file-extension sanitization"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-38519",
    "datePublished": "2024-07-02T13:47:36.399Z",
    "dateReserved": "2024-06-18T16:37:02.728Z",
    "dateUpdated": "2024-08-02T04:12:25.618Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "yt-dlp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2024.07.01"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-38519"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434",
      "CWE-669"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-02T15:58:35Z",
    "nvd_published_at": "2024-07-02T14:15:13Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n`yt-dlp` does not limit the extensions of downloaded files, which could lead to arbitrary filenames being created in the download folder (and path traversal on Windows). Since `yt-dlp` also reads config from the working directory (and on Windows executables will be executed from the yt-dlp directory) this could lead to arbitrary code being executed.\n\n### Patches\n`yt-dlp` version 2024.07.01 fixes this issue by whitelisting the allowed extensions.\nThis means some very uncommon extensions might not get downloaded; however, it will also limit the possible exploitation surface.\n\n### Workarounds\nIt is recommended to upgrade yt-dlp to version 2024.07.01 as soon as possible, **always** have `.%(ext)s` at the end of the output template, and make sure you trust the websites that you are downloading from. Also, make sure to never download to a directory within PATH or other sensitive locations like your user directory, `system32`, or other binaries locations.\n\nFor users not able to upgrade:\n- Make sure the extension of the media to download is a common video/audio/sub/... one\n- Try to avoid the generic extractor (`--ies default,-generic`)\n- Keep the default output template (`-o \"%(title)s [%(id)s].%(ext)s`)\n- Omit any of the subtitle options (`--write-subs`, `--write-auto-subs`, `--all-subs`, `--write-srt`)\n- Use `--ignore-config --config-location ...` to not load config from common locations\n\n### Details\nOne potential exploitation might look like this:\n\nFrom a mimetype we do not know, we default to trimming the leading bit and using the remainder. Given a webpage that contains\n```html\n\u003cscript type=\"application/ld+json\"\u003e\n{\n    \"@context\": \"https://schema.org\",\n    \"@type\": \"VideoObject\",\n    \"name\": \"ffmpeg\",\n    \"encodingFormat\": \"video/exe\",\n    \"contentUrl\": \"https://example.com/video.mp4\"\n}\n\u003c/script\u003e\n```\nthis will try and download a file called `ffmpeg.exe` (`-o \"%(title)s.%(ext)s`).\n`ffmpeg.exe` will be searched for in the current directory, and so upon the next run arbitrary code can be executed.\n\nAlternatively, when engineering a file called `yt-dlp.conf` to be created, the config file could contain `--exec ...` and so would also execute arbitrary code.\n\n### Acknowledgement\nA big thanks to @JarLob for independently finding a new application of the same underlying issue.\nMore can be read about on the dedicated GitHub Security Lab disclosure here: [Path traversal saving subtitles (GHSL-2024-090)](\u003chttps://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp\u003e)\n\n### References\n- https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j\n- https://nvd.nist.gov/vuln/detail/CVE-2024-38519\n- https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01\n- https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a\n- https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp\n",
  "id": "GHSA-79w7-vh3h-8g4j",
  "modified": "2024-07-05T17:54:51Z",
  "published": "2024-07-02T15:58:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dirkf/youtube-dl/security/advisories/GHSA-22fp-mf44-f2mq"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38519"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ytdl-org/youtube-dl/pull/32830"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yt-dlp/yt-dlp/commit/5ce582448ececb8d9c30c8c31f58330090ced03a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ytdl-org/youtube-dl/commit/d42a222ed541b96649396ef00e19552aef0f09ec"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/yt-dlp/yt-dlp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yt-dlp/yt-dlp/releases/tag/2024.07.01"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2024-089_youtube-dl"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2024-090_yt-dlp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "yt-dlp File system modification and RCE through improper file-extension sanitization"
}