{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42241", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-25T05:37:12.118Z", "datePublished": "2026-05-07T18:52:06.773Z", "dateUpdated": "2026-05-07T18:52:06.773Z"}, "containers": {"cna": {"title": "ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width", "problemTypes": [{"descriptions": [{"cweId": "CWE-789", "lang": "en", "description": "CWE-789: Memory Allocation with Excessive Size Value", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88"}, {"name": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1"}], "affected": [{"vendor": "G-Research", "product": "ParquetSharp", "versions": [{"version": ">= 18.1.0, < 23.0.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-07T18:52:06.773Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-rrjr-v56m-ww88", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-42241", "lastModified": "2026-05-07T20:37:54.060", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-07T20:16:44.247", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/G-Research/ParquetSharp/releases/tag/23.0.0.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/G-Research/ParquetSharp/security/advisories/GHSA-rrjr-v56m-ww88"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-789"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.1.0,23.0.0.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "ParquetSharp", "source": "cna", "vendor": "G-Research"}, "product": "parquetsharp", "vendor": "g-research"}], "created": "2026-05-07T20:45:22.133997+00:00", "updated": "2026-05-07T21:24:24.028877+00:00", "vendors": ["g-research", "g-research$PRODUCT$parquetsharp"]}