{"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":"2026-05-08T21:30:27.110Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-08T14:38:23.750570Z","id":"CVE-2026-42241","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-08T21:30:27.110Z"}}]}}