CVE-2026-20251
Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway
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.
- Affected
- Splunk · Splunk Enterprise · Splunk Cloud Platform · Splunk Secure Gateway
- CVSS v3.1 CISCO
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 32.21% chance of exploitation in the next 30 days, 98th percentile
- Published
- 2026-06-10
- Updated
- 2026-06-11
Proof-of-concept exploits (1)
- reactivezero/CVE-2026-202513★ · 2026-06-26