Improper access control in Splunk Enterprise - CVE-2026-20259
Published: June 12, 2026
Vulnerability identifier: #VU134465
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20259
CWE-ID: CWE-284
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 disclose sensitive information.
The vulnerability exists due to improper access control in the ownership reassignment endpoint when reassigning saved search ownership. A remote privileged user can reassign saved search ownership to users outside their authorized scope to disclose sensitive information.
Exploitation requires a role that includes the edit_saved_search_owner capability.
How to mitigate CVE-2026-20259
Install security update from vendor's website.