{"id":"CVE-2026-42241","revision":"83fa97c7a5a9483d88b68795c042fc17","records":[{"revision":"83fa97c7a5a9483d88b68795c042fc17","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42241","aliases":[],"title":"ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width","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.","state":0,"publishedAt":"2026-05-07T18:52:06.773+00:00","modifiedAt":"2026-05-08T21:30:27.11+00:00","affected":[{"ecosystem":"Vendor product","name":"ParquetSharp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"G-Research\",\n                    \"product\": \"ParquetSharp\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 18.1.0, < 23.0.0.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88","https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42241","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-42241","identifiers":["CVE-2026-42241"]},"retained":false,"historicalAffected":[]}],"coverage":[]}