GitHub Advisoryadvisory · NuGet

GHSA-rrjr-v56m-ww88 ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width

MEDIUM Published 2026-04-24 Modified 2026-05-11 Official page ↗
Aliases
CVE-2026-42241
Ecosystem
NuGet
Packages
ParquetSharp
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-789
Reviewed
2026-04-24

Affected packages

• NuGet ParquetSharp: >= 18.1.0, < 23.0.0.1 → fixed in 23.0.0.1

Description

`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.

Related

Alias · CVE (1)

  • CVE-2026-42241 ParquetSharp is a .NET library for reading and writing Apache Parquet files. vulnerability

Weakness · CWE (1)

  • CWE-789 Memory Allocation with Excessive Size Value weakness

References