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CVE-2026-42241

ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
G-Research / ParquetSharpaffected >= 18.1.0, < 23.0.0.1

CWE

CWE-789

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.