ghsa-4m64-g8r6-3ghw
Vulnerability from github
Published
2025-11-13 00:30
Modified
2025-11-13 00:30
Severity ?
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Details

Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-4463"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T22:15:41Z",
    "severity": "HIGH"
  },
  "details": "Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the \u0027downloads\u0027 endpoint. The \u0027fileName\u0027 parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.",
  "id": "GHSA-4m64-g8r6-3ghw",
  "modified": "2025-11-13T00:30:17Z",
  "published": "2025-11-13T00:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4463"
    },
    {
      "type": "WEB",
      "url": "https://cxsecurity.com/issue/WLB-2021070173"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/206477"
    },
    {
      "type": "WEB",
      "url": "https://packetstormsecurity.com/files/163702"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20220527162453/http://www.ljkj2012.com"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/50163"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/longjing-technology-bems-api-remote-arbitrary-file-download"
    },
    {
      "type": "WEB",
      "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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",
      "type": "CVSS_V4"
    }
  ]
}


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