ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width_CVE-2026-42241

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-07T18:52:06.773Z",
    "modified": "2026-05-07T18:52:06.773Z",
    "type": "cve",
    "title": "ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width",
    "source": "GitHub_M",
    "references": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88\nhttps://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1",
    "id": "CVE-2026-42241",
    "bulletinFamily": "",
    "cwe": [
        "CWE-789"
    ],
    "cvelist": null,
    "sourceData": "G-Research ParquetSharp >= 18.1.0, < 23.0.0.1",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "ParquetSharp",
    "version": ">= 18.1.0, < 23.0.0.1",
    "vendor": "G-Research",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}