github - ghsa-5w3j-gwgh-4rfv

ghsa-5w3j-gwgh-4rfv

Vulnerability from github

Published

2025-09-22 18:30

Modified

2025-09-22 21:09

Severity ?

9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

H2O affected by a deserialization vulnerability

Details

A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.7, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and using double URL encoding. This issue impacts all users of the affected versions.

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "ai.h2o:h2o-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.46.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "h2o"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.46.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-6544"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-22T21:09:54Z",
    "nvd_published_at": "2025-09-21T09:15:38Z",
    "severity": "CRITICAL"
  },
  "details": "A deserialization vulnerability exists in h2oai/h2o-3 versions \u003c= 3.46.0.7, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and using double URL encoding. This issue impacts all users of the affected versions.",
  "id": "GHSA-5w3j-gwgh-4rfv",
  "modified": "2025-09-22T21:09:54Z",
  "published": "2025-09-22T18:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6544"
    },
    {
      "type": "WEB",
      "url": "https://github.com/h2oai/h2o-3/commit/0298ee348f5c73673b7b542158081e79605f5f25"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/h2oai/h2o-3"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40"
    }
  ],
  "schema_version": "1.4.0",
  "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 affected by a deserialization vulnerability"
}

CVE-2025-6544 (GCVE-0-2025-6544)

Vulnerability from cvelistv5

Published

2025-09-21 09:00

Modified

2025-09-22 17:23

Severity ?

9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-502 - Deserialization of Untrusted Data

Summary

A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.8, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and using double URL encoding. This issue impacts all users of the affected versions.

References

▼	URL	Tags
	https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40
	https://github.com/h2oai/h2o-3/commit/0298ee348f5c73673b7b542158081e79605f5f25

Impacted products

	Vendor	Product	Version
	h2oai	h2oai/h2o-3	Version: unspecified < 3.46.8

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-6544",
                "options": [
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                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-22T17:23:22.604678Z",
                "version": "2.0.3"
              },
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-22T17:23:25.409Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
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            "tags": [
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            "url": "https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40"
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        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "product": "h2oai/h2o-3",
          "vendor": "h2oai",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A deserialization vulnerability exists in h2oai/h2o-3 versions \u003c= 3.46.0.8, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and using double URL encoding. This issue impacts all users of the affected versions."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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      "problemTypes": [
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        "shortName": "@huntr_ai"
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      "references": [
        {
          "url": "https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40"
        },
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        }
      ],
      "source": {
        "advisory": "53f35a0f-d644-4f82-93aa-89fe7e0aed40",
        "discovery": "EXTERNAL"
      },
      "title": "Deserialization Vulnerability in h2oai/h2o-3"
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  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
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    "datePublished": "2025-09-21T09:00:09.724Z",
    "dateReserved": "2025-06-23T18:25:36.504Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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