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CVE-2026-28672

CriticalPublished

Apache Ranger: OS Command Injection via Username in UnixUserGroupBuilder

Published: Aug 10, 2026
Updated: Aug 12, 2026
Assigning CNA: apache
Evidence observed: Aug 24, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

1.3%

Low · next 30 days

Percentile: 68.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Apache Ranger. This issue affects Apache Ranger: from 0.6 through 2.8.

Sources

CVE-2026-28672PoC
Proof-of-concept reproducer for Apache Ranger UnixUserGroupBuilder OS command injection (CVE-2026-28672), demonstrating the vulnerability and verifying the fix.

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