{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ec7d824ea6903c0fb97a452045bbb8335198cbab"
            }
          ],
          "repo": "https://github.com/lukejacksonn/servor",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "1.0.0"
          },
          {
            "fixed": "4.0.2"
          },
          {
            "fixed": "path.join"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Servor 1.0.0 through 4.0.2 contains a path traversal vulnerability that allows unauthenticated remote attackers to escape the served root by sending URL-encoded dot segments. Attackers can send %2e%2e/ sequences, which decodeURI() decodes before path.join() in serveStaticFile and serveDirectoryListing, to read arbitrary files and list directories outside the root.",
  "id": "CVE-2021-48011",
  "modified": "2026-10-15T02:30:41.215615136Z",
  "published": "2026-10-12T21:17:05.903Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/servor-1.0.0-through-4.0.2-unauthenticated-path-traversal-via-url-encoded-dot-segments"
    },
    {
      "type": "FIX",
      "url": "https://github.com/lukejacksonn/servor/commit/ec7d824ea6903c0fb97a452045bbb8335198cbab"
    },
    {
      "type": "FIX",
      "url": "https://github.com/lukejacksonn/servor/pull/70"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lukejacksonn/servor"
    }
  ],
  "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"
    }
  ]
}