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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-20251

Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Splunk Splunk Enterprise

  • 10.2 to < 10.2.4affected
  • 10.0 to < 10.0.7affected
  • 9.4 to < 9.4.12affected
  • 9.3 to < 9.3.13affected

Splunk Splunk Cloud Platform

  • 10.3.2512 to < 10.3.2512.12affected
  • 10.2.2510 to < 10.2.2510.14affected
  • 10.1.2507 to < 10.1.2507.22affected
  • 9.3.2411 to < 9.3.2411.132affected

Splunk Splunk Secure Gateway

  • 3.10 to < 3.10.6affected
  • 3.9 to < 3.9.20affected
  • 3.8 to < 3.8.67affected

References