CVE-2026-20239
Last modified
CVE-2026-20239 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
Description
In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk | >= 10.0.0, < 10.0.5 |
| Splunk | Splunk | >= 10.2.0, < 10.2.2 |
| Splunk | Splunk Cloud Platform | >= 10.0.2503, < 10.0.2503.13 |
| Splunk | Splunk Cloud Platform | >= 10.1.2507, < 10.1.2507.21 |
| Splunk | Splunk Cloud Platform | >= 10.2.2510, < 10.2.2510.11 |
| Splunk | Splunk Cloud Platform | >= 10.3.2512, < 10.3.2512.8 |
References
- https://advisory.splunk.com/advisories/SVD-2026-0503Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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