GHSA-F8RJ-8X92-PFP5

Vulnerability from github – Published: 2026-08-05 09:31 – Updated: 2026-08-05 09:31
VLAI
Details

HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail() in src/Server/Entity/Resource/Media.js builds a temporary file path as 'thumbnail' + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec() ('convert ' + tempFile + ...). The MIME-type filter in getMIMEType() (src/Common/utilities.js) truncates the extracted extension at the first '?' character, while Path.extname() does not, allowing a filename such as 'x.jpg?$(command)' to pass the image-type check while still injecting a shell command substitution into the exec() call. An authenticated user holding the media resource scope can achieve arbitrary OS command execution in the context of the Node.js process via POST /api/{project}/{environment}/media/new.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-70374"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T07:16:39Z",
    "severity": null
  },
  "details": "HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail() in src/Server/Entity/Resource/Media.js builds a temporary file path as \u0027thumbnail\u0027 + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec() (\u0027convert \u0027 + tempFile + ...). The MIME-type filter in getMIMEType() (src/Common/utilities.js) truncates the extracted extension at the first \u0027?\u0027 character, while Path.extname() does not, allowing a filename such as \u0027x.jpg?$(command)\u0027 to pass the image-type check while still injecting a shell command substitution into the exec() call. An authenticated user holding the media resource scope can achieve arbitrary OS command execution in the context of the Node.js process via POST /api/{project}/{environment}/media/new.",
  "id": "GHSA-f8rj-8x92-pfp5",
  "modified": "2026-08-05T09:31:15Z",
  "published": "2026-08-05T09:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70374"
    },
    {
      "type": "WEB",
      "url": "https://cve.turansec.uz/advisories/TRN-11FC0D88"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HashBrownCMS/hashbrown-cms"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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