{"cve":"CVE-2021-41561","nvd":{"published":"2021-12-20T12:15:07.333","modified":"2026-06-17T04:08:39.143","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-20"],"references":["http://www.openwall.com/lists/oss-security/2021/12/20/1","https://lists.apache.org/thread/1bjlscbqtfzl160hrm9lnpjpppp5z3zr","http://www.openwall.com/lists/oss-security/2021/12/20/1","https://lists.apache.org/thread/1bjlscbqtfzl160hrm9lnpjpppp5z3zr"],"products":["apache:parquet_java"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-41561","score":0.03152,"percentile":0.87953,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gc67-crq6-hgh5","url":"https://osv.dev/vulnerability/GHSA-gc67-crq6-hgh5","summary":"Improper Input Validation in Parquet-MR","modified":"2023-11-08T04:06:59.842754Z","packages":[{"ecosystem":"Maven","name":"org.apache.parquet:parquet","purl":"pkg:maven/org.apache.parquet/parquet","ranges":[">=1.12.0 <1.12.2"],"fixed":["1.12.2"]},{"ecosystem":"Maven","name":"org.apache.parquet:parquet","purl":"pkg:maven/org.apache.parquet/parquet","ranges":["<1.11.2"],"fixed":["1.11.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}