CVE-2026-42241— ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width
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I. Basic Information for CVE-2026-42241
Vulnerability Information
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Vulnerability Title
ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的内存分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
ParquetSharp 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ParquetSharp是G-Research开源的一款跨平台读写Parquet文件的.NET库。 ParquetSharp 18.1.0版本至23.0.0.1之前版本存在安全漏洞，该漏洞源于DecimalConverter.ReadDecimal使用攻击者可能提供的值进行stackalloc，可能导致堆栈溢出，在服务环境中可能导致服务中断。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| G-Research | ParquetSharp | >= 18.1.0, < 23.0.0.1 | - |
II. Public POCs for CVE-2026-42241
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|---|
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- Release ParquetSharp 23.0.0.1 · G-Research/ParquetSharp · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-42241
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