{"id":"CVE-2026-42241","sourceIdentifier":"security-advisories@github.com","published":"2026-05-07T20:16:44.247","lastModified":"2026-06-17T10:47:34.080","vulnStatus":"Deferred","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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"G-Research","product":"ParquetSharp","versions":[{"version":">= 18.1.0, < 23.0.0.1","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-08T14:38:23.750570Z","id":"CVE-2026-42241","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-789"}]}],"references":[{"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","source":"security-advisories@github.com"}]}