Vulnerability in Splunk
CVE-2026-20259
In Splunk Enterprise versions below 10.2.4 and 10.0.7, and Splunk Cloud Platform versions below 10.4.2604.0, 10.3.2512.12, 10.2.2510.15, 10.1.2507.23, 10.0.2503.14, and 9.3.2411.131, a user who holds a Splunk role that contains the high-privilege capability `edit_saved_search_owner` could reassign saved search ownership to users outside their authorized scope. The ownership reassignment endpoint lacks access control.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Splunk
- Splunk Cloud Platform — versions 10.3.2512, 10.2.2510, 10.1.2507
- Splunk Cloud Platform
- Splunk Enterprise — versions 10.2, 10.0
Weakness classification (CWE)
References
- advisory.splunk.com/advisories/SVD-2026-0609 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20259?
- CVE-2026-20259 is a medium-severity vulnerability in Splunk, classified under Improper Access Control. CVSS score: 5.5/10. Published 2026-06-10.
- How severe is CVE-2026-20259?
- Medium severity. CVSS v3 base score is 5.5 out of 10.