Critical severity · published Aug 10, 2026
CVE-2026-28672
Apache Ranger: OS Command Injection via Username in UnixUserGroupBuilder
9.8
CVSS
2.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
Apache Ranger · Apache Software Foundation
0.6 through 2.8 · source: vendor
RA
Ranger · Apache
0.6.0 through 2.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28672
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28672
Mailing List
https://lists.apache.org/thread/99ysjqcmz950o3jgm6pqx1wb696onzq7
Mailing List
http://www.openwall.com/lists/oss-security/2026/08/09/2
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