{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.2.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7686d8fcef284cda07a951ad74a5e90c69a9dfb1"
            }
          ],
          "repo": "https://github.com/litespeedtech/lsquic",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "A hash collision vulnerability (in the hash table used to manage connections) in LSQUIC (aka LiteSpeed QUIC) before 4.2.0 allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This is caused by XXH32 usage.",
  "id": "CVE-2025-24947",
  "modified": "2026-03-15T21:45:21.925393584Z",
  "published": "2025-02-20T03:15:12.943Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/litespeedtech/lsquic/releases/tag/v4.2.0"
    },
    {
      "type": "WEB",
      "url": "https://xxhash.com"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}