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Vulnerability record · CVE-2021-41561 · published 20 December 2021

CVE-2021-41561: Apache parquet java improper input validation vulnerability

Apache · Parquet Java

Improper Input Validation vulnerability in Parquet-MR of Apache Parquet allows an attacker to DoS by malicious Parquet files. This issue affects Apache Parquet-MR version 1.9.0 and later versions.

7.5 CVSS 3.1 High EPSS 3.1% · top 12.9% CWE-20 · Improper input validation
7.5CVSS 3.1 base score, v2 5.0
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Improper Input Validation vulnerability in Parquet-MR of Apache Parquet allows an attacker to DoS by malicious Parquet files. This issue affects Apache Parquet-MR version 1.9.0 and later versions.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2021/12/20/1 Mailing ListThird Party Advisory
https://lists.apache.org/thread/1bjlscbqtfzl160hrm9lnpjpppp5z3zr Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2021/12/20/1 Mailing ListThird Party Advisory
https://lists.apache.org/thread/1bjlscbqtfzl160hrm9lnpjpppp5z3zr Mailing ListVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-41561), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.