Command Injection in Splunk Enterprise - CVE-2026-20163
Published: March 13, 2026
Vulnerability identifier: #VU123983
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20163
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Splunk Inc.
Affected software:
Splunk Enterprise
Splunk Enterprise
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation when handling the "unarchive_cmd" parameter for the "/splunkd/__upload/indexing/preview" REST endpoint. A remote privileged user with "edit_cmd" capability can pass specially crafted data to the application and execute arbitrary commands.
How to mitigate CVE-2026-20163
Install updates from vendor's website.