{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.4.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "873fdc55eddd672960fdbc1325ccb7c4bf466f05"
            }
          ],
          "repo": "https://github.com/socketio/socket.io",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "The package socket.io before 2.4.0 are vulnerable to Insecure Defaults due to CORS Misconfiguration. All domains are whitelisted by default.",
  "id": "CVE-2020-28481",
  "modified": "2026-03-15T21:46:24.087304331Z",
  "published": "2021-01-19T15:15:12.060Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://snyk.io/vuln/SNYK-JS-SOCKETIO-1024859"
    },
    {
      "type": "ADVISORY",
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1056358"
    },
    {
      "type": "ADVISORY",
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1056357"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/socketio/socket.io/issues/3671"
    }
  ],
  "related": [
    "SNYK-JAVA-ORGWEBJARSBOWER-1056358",
    "SNYK-JAVA-ORGWEBJARSNPM-1056357",
    "SNYK-JS-SOCKETIO-1024859"
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}