CVE-2026-20251
Last modified
CVE-2026-20251 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, Splunk Cloud Platform versions below 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, and Splunk Secure Gateway versions below 3.10.6, 3.9.20, and 3.8.67, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.<br><br>The Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the ‘jsonpickle’ Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.
Description
In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, Splunk Cloud Platform versions below 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, and Splunk Secure Gateway versions below 3.10.6, 3.9.20, and 3.8.67, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could perform a Remote Code Execution (RCE) through the Splunk Secure Gateway app.<br><br>The Remote Code Execution is possible because of unsafe deserialization of App Key Value Store (KV Store) data through the ‘jsonpickle’ Python library, which reconstructs arbitrary Python objects from specially crafted JavaScript Object Notation (JSON) without adequate validation.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk | >= 9.3.0, < 9.3.13 |
| Splunk | Splunk | >= 9.4.0, < 9.4.12 |
| Splunk | Splunk | >= 10.0.0, < 10.0.7 |
| Splunk | Splunk | >= 10.2.0, < 10.2.4 |
| Splunk | Splunk Cloud Platform | >= 9.3.2411, < 9.3.2411.132 |
| Splunk | Splunk Cloud Platform | >= 10.1.2507, < 10.1.2507.22 |
| Splunk | Splunk Cloud Platform | >= 10.2.2510, < 10.2.2510.14 |
| Splunk | Splunk Cloud Platform | >= 10.3.2512, < 10.3.2512.12 |
| Splunk | Splunk Secure Gateway | >= 3.8.0, < 3.8.67 |
| Splunk | Splunk Secure Gateway | >= 3.9.0, < 3.9.20 |
| Splunk | Splunk Secure Gateway | >= 3.10.0, < 3.10.6 |
References
- https://advisory.splunk.com/advisories/SVD-2026-0601Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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