Cloudanix VulnDB

CVE-2026-42241

Medium · 5.3

CVSS

5.3

EPSS

0.5%

Published

May 7, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed

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