CVE-2026-42241

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Source
https://cve.org/CVERecord?id=CVE-2026-42241
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42241.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42241
Aliases
Published
2026-05-07T18:52:06Z
Modified
2026-08-12T03:51:43Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
ParquetSharp: Possible Stack Overflow When Reading a ParquetFile with Large Decimal Type Width
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42241.json"
}
References

Affected packages

Git / github.com/g-research/parquetsharp

Affected ranges

Type
GIT
Repo
https://github.com/g-research/parquetsharp
Events
Introduced
f0ee0b90b4156f1b526e592d8fc1df641b663d81
Fixed
d87081931cdecfd2e4401909ecefd220b3ee2a91
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "18.1.0"
        },
        {
            "fixed": "23.0.0.1"
        },
        {
            "introduced": "0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

18.*
18.1.0
19.*
19.0.1
19.0.1-beta1
20.*
20.0.0
20.0.0-beta1
20.0.0-beta2
21.*
21.0.0
21.0.0-beta1
23.*
23.0.0
23.0.0-beta1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42241.json"