Vulnerability-Lookup

GHSA-RRJR-V56M-WW88

Vulnerability from github – Published: 2026-04-24 16:39 – Updated: 2026-05-11 13:29

Summary

ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width

Details

DecimalConverter.ReadDecimal makes a stackalloc using what might be an attacker-supplied value. If an attacker declares a decimal column with some unreasonable width, this could lead to a stack overflow. In a service environment, this would potentially take down a service.

This affects applications using ParquetSharp to read untrusted Parquet files in a network service.

Severity

5.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "ParquetSharp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "18.1.0"
            },
            {
              "fixed": "23.0.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42241"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-789"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-24T16:39:55Z",
    "nvd_published_at": "2026-05-07T20:16:44Z",
    "severity": "MODERATE"
  },
  "details": "`DecimalConverter.ReadDecimal` makes a stackalloc using what might be an attacker-supplied value. If an attacker declares a decimal column with some unreasonable width, this could lead to a stack overflow. In a service environment, this would potentially take down a service.\n\nThis affects applications using ParquetSharp to read untrusted Parquet files in a network service.",
  "id": "GHSA-rrjr-v56m-ww88",
  "modified": "2026-05-11T13:29:39Z",
  "published": "2026-04-24T16:39:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42241"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/G-Research/ParquetSharp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width"
}

CVE-2026-42241 (GCVE-0-2026-42241)

Vulnerability from cvelistv5 – Published: 2026-05-07 18:52 – Updated: 2026-05-08 21:30

Title

ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width

Summary

ParquetSharp is a .NET library for reading and writing Apache Parquet files. From version 18.1.0 to before version 23.0.0.1, DecimalConverter.ReadDecimal makes a stackalloc using what might be an attacker-supplied value. If an attacker declares a decimal column with some unreasonable width, this could lead to a stack overflow. In a service environment, this would potentially take down a service. This affects applications using ParquetSharp to read untrusted Parquet files in a network service. This issue has been patched in version 23.0.0.1.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/G-Research/ParquetSharp/securi…	x_refsource_CONFIRM
https://github.com/G-Research/ParquetSharp/releas…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
G-Research	ParquetSharp	Affected: >= 18.1.0, < 23.0.0.1

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42241",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T14:38:23.750570Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-08T21:30:27.110Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ParquetSharp",
          "vendor": "G-Research",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 18.1.0, \u003c 23.0.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ParquetSharp is a .NET library for reading and writing Apache Parquet files. From version 18.1.0 to before version 23.0.0.1, DecimalConverter.ReadDecimal makes a stackalloc using what might be an attacker-supplied value. If an attacker declares a decimal column with some unreasonable width, this could lead to a stack overflow. In a service environment, this would potentially take down a service. This affects applications using ParquetSharp to read untrusted Parquet files in a network service. This issue has been patched in version 23.0.0.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T18:52:06.773Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88"
        },
        {
          "name": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1"
        }
      ],
      "source": {
        "advisory": "GHSA-rrjr-v56m-ww88",
        "discovery": "UNKNOWN"
      },
      "title": "ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42241",
    "datePublished": "2026-05-07T18:52:06.773Z",
    "dateReserved": "2026-04-25T05:37:12.118Z",
    "dateUpdated": "2026-05-08T21:30:27.110Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Action not permitted

GHSA-RRJR-V56M-WW88

CVE-2026-42241 (GCVE-0-2026-42241)

Tags

Sightings

Nomenclature