Memory Allocation with Excessive Size Value Affecting parquetsharp package, versions [18.1.0,23.0.0.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-PARQUETSHARP-16638692
- published11 May 2026
- disclosed24 Apr 2026
- creditCurt Hagenlocher
Introduced: 24 Apr 2026
CVE-2026-42241 (opens in a new tab)How to fix?
Upgrade ParquetSharp to version 23.0.0.1 or higher.
Overview
ParquetSharp is a .NET library for reading and writing Parquet files.
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the DecimalConverter.ReadDecimal() function. An attacker can cause a large stackalloc by supplying a Parquet file with a decimal column of excessively large width, leading to a stack overflow. In a service environment, this can crash the service.