{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.7.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5b197ca874dab58e96cacad8a3c256797d804680"
            }
          ],
          "repo": "https://github.com/faye/websocket-driver-node",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xv26-6w52-cph6"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-130"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54466.json"
  },
  "details": "websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.7.5, the frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a client can make the server parse these bytes into an ever-growing integer in lib/websocket/driver/draft75.js; because JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. This issue is fixed in version 0.7.5.",
  "id": "CVE-2026-54466",
  "modified": "2026-07-22T05:29:48.355390662Z",
  "published": "2026-07-17T20:53:24.769Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54466.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54466"
    },
    {
      "type": "FIX",
      "url": "https://github.com/faye/websocket-driver-node/commit/5b197ca874dab58e96cacad8a3c256797d804680"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "websocket-driver: Message corruption via abuse of protocol length headers"
}