CVE-2026-28672: Apache Ranger: OS Command Injection via Username in UnixUserGroupBuilder

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-10 · updated 2026-10-23
Weakness: CWE-77

Description

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.

Affected products

Apache Software Foundation Apache Ranger: from 0.6.0 through 2.8.0

References

https://lists.apache.org/thread/99ysjqcmz950o3jgm6pqx1wb696onzq7
http://www.openwall.com/lists/oss-security/2026/08/09/2

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