{
  "schema_version": "1.4.0",
  "id": "GHSA-wwr9-4gmr-xvq9",
  "modified": "2025-03-20T19:44:43Z",
  "published": "2025-03-20T12:32:39Z",
  "aliases": [
    "CVE-2024-10549"
  ],
  "summary": "H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint",
  "details": "A vulnerability in the `/3/Parse` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an attacker can exhaust all available threads, leading to a complete denial of service.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "h2o"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "3.30.0.7"
            },
            {
              "last_affected": "3.46.0.1"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "ai.h2o:h2o-core"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "3.30.0.7"
            },
            {
              "last_affected": "3.46.0.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10549"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/h2oai/h2o-3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/h2oai/h2o-3/blob/51c25940ded8b7d0acc8f3f72329fd9dedbb3a34/h2o-core/src/main/java/water/api/ParseHandler.java#L80"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/ce7bd2d6-fd38-440d-a91a-dd8f3fc06bc2"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-20T19:44:43Z",
    "nvd_published_at": "2025-03-20T10:15:17Z"
  }
}