PYSEC-2026-351

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-07-01 20:22
VLAI
Details

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are passed to DriverManager.getConnection, leading to deserialization if a MySQL or PostgreSQL driver is available in the classpath. This issue is fixed in version 3.46.0.6.

Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impacted products
Name purl
h2o pkg:pypi/h2o
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "h2o",
        "purl": "pkg:pypi/h2o"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.46.0.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.10.0.10",
        "3.10.0.3",
        "3.10.0.6",
        "3.10.0.7",
        "3.10.0.8",
        "3.10.3.3",
        "3.10.3.4",
        "3.10.4.1",
        "3.10.4.2",
        "3.10.4.3",
        "3.10.4.4",
        "3.10.4.6",
        "3.10.4.8",
        "3.16.0.1",
        "3.16.0.2",
        "3.16.0.3",
        "3.16.0.4",
        "3.18.0.1",
        "3.18.0.10",
        "3.18.0.11",
        "3.18.0.2",
        "3.18.0.3",
        "3.18.0.4",
        "3.18.0.5",
        "3.18.0.6",
        "3.18.0.7",
        "3.18.0.8",
        "3.18.0.9",
        "3.20.0.4",
        "3.20.0.5",
        "3.20.0.6",
        "3.20.0.7",
        "3.20.0.8",
        "3.22.0.1",
        "3.22.0.2",
        "3.22.0.3",
        "3.22.0.4",
        "3.22.0.5",
        "3.22.1.1",
        "3.22.1.2",
        "3.22.1.3",
        "3.22.1.4",
        "3.22.1.5",
        "3.22.1.6",
        "3.24.0.1",
        "3.24.0.2",
        "3.24.0.3",
        "3.24.0.4",
        "3.24.0.5",
        "3.26.0.1",
        "3.26.0.10",
        "3.26.0.11",
        "3.26.0.2",
        "3.26.0.3",
        "3.26.0.4",
        "3.26.0.5",
        "3.26.0.6",
        "3.26.0.8",
        "3.26.0.9",
        "3.28.0.1",
        "3.28.0.2",
        "3.28.0.3",
        "3.28.1.2",
        "3.28.1.3",
        "3.30.0.1",
        "3.30.0.2",
        "3.30.0.3",
        "3.30.0.4",
        "3.30.0.5",
        "3.30.0.6",
        "3.30.0.7",
        "3.30.1.1",
        "3.30.1.2",
        "3.30.1.3",
        "3.32.0.2",
        "3.32.0.3",
        "3.32.0.4",
        "3.32.0.5",
        "3.32.1.1",
        "3.32.1.2",
        "3.32.1.3",
        "3.32.1.4",
        "3.32.1.5",
        "3.32.1.6",
        "3.32.1.7",
        "3.34.0.3",
        "3.34.0.7",
        "3.34.0.8",
        "3.36.0.2",
        "3.36.0.3",
        "3.36.0.4",
        "3.36.1.1",
        "3.36.1.2",
        "3.36.1.3",
        "3.36.1.4",
        "3.36.1.5",
        "3.38.0.1",
        "3.38.0.2",
        "3.38.0.3",
        "3.38.0.4",
        "3.40.0.1",
        "3.40.0.2",
        "3.40.0.3",
        "3.40.0.4",
        "3.42.0.1",
        "3.42.0.2",
        "3.42.0.3",
        "3.42.0.4",
        "3.44.0.1",
        "3.44.0.2",
        "3.44.0.3",
        "3.46.0.1",
        "3.46.0.2",
        "3.46.0.3",
        "3.46.0.4",
        "3.46.0.5"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-10553",
    "GHSA-h7xg-cmpp-48hf"
  ],
  "details": "A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are passed to DriverManager.getConnection, leading to deserialization if a MySQL or PostgreSQL driver is available in the classpath. This issue is fixed in version 3.46.0.6.",
  "id": "PYSEC-2026-351",
  "modified": "2026-07-01T20:22:54.116563Z",
  "published": "2026-06-29T11:50:35.058540Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10553"
    },
    {
      "type": "WEB",
      "url": "https://github.com/h2oai/h2o-3/commit/ac1d642b4d86f10a02d75974055baf2a4b2025ac"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/h2oai/h2o-3"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/e6f550dd-eda2-428c-a740-ed8f893a084b"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/h2o"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-h7xg-cmpp-48hf"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "H2O Deserialization of Untrusted Data Vulnerability"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.