{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.8.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d0141f041f6e3677a951255d547a313e732ccbe0"
            }
          ],
          "repo": "https://github.com/faye/websocket-driver-ruby",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-ghhp-3qvg-889p"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54463.json"
  },
  "details": "websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.1, draft versions of the WebSocket protocol in websocket-driver include a length header that allows an arbitrarily large integer to be encoded as bytes with the high bit set, and a server or client can send an indefinite sequence of 0x80 or higher bytes that the peer parses into an ever-growing Ruby integer. This can make a WebSocket connection consume an unbounded amount of memory and lead to the host process running out of memory. This issue is fixed in version 0.8.1.",
  "id": "CVE-2026-54463",
  "modified": "2026-07-22T05:30:09.891794997Z",
  "published": "2026-07-17T20:05:17.888Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54463.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/faye/websocket-driver-ruby/security/advisories/GHSA-ghhp-3qvg-889p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54463"
    },
    {
      "type": "FIX",
      "url": "https://github.com/faye/websocket-driver-ruby/commit/d0141f041f6e3677a951255d547a313e732ccbe0"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "websocket-driver: Memory exhaustion via abuse of protocol length headers"
}