CVE Explorer
CVE-2026-42241
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. Th
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"ParquetSharp","vendor":"G-Research","versions":[{"status":"affected","version":">= 18.1.0, < 23.0.0.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a5f835b03b3e3e3d01517bdd8bb2058e913aea33584022c4c7fbc8acdf03ff86 · sha256:50f5dbc13cc43517… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"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"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a5f835b03b3e3e3d01517bdd8bb2058e913aea33584022c4c7fbc8acdf03ff86 · sha256:50f5dbc13cc43517… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a5f835b03b3e3e3d01517bdd8bb2058e913aea33584022c4c7fbc8acdf03ff86 · sha256:50f5dbc13cc43517… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a5f835b03b3e3e3d01517bdd8bb2058e913aea33584022c4c7fbc8acdf03ff86 · sha256:50f5dbc13cc43517… · /containers/cna/references/1
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a5f835b03b3e3e3d01517bdd8bb2058e913aea33584022c4c7fbc8acdf03ff86 · sha256:50f5dbc13cc43517… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.