CVE-2025-20381
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-03

Last updated on: 2025-12-04

Assigner: Cisco Systems, Inc.

Description
In Splunk MCP Server app versions below 0.2.4, a user with access to the "run_splunk_query" Model Context Protocol (MCP) tool could bypass the SPL command allowlist controls in MCP by embedding SPL commands as sub-searches, leading to unauthorized actions beyond the intended MCP restrictions.
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Meta Information
Published
2025-12-03
Last Modified
2025-12-04
Generated
2026-06-16
AI Q&A
2025-12-03
EPSS Evaluated
2026-06-15
NVD
CVE-2025-20381
EUVD
EUVD-2025-200993
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
splunk mcp_server_app *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
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Executive Summary

This vulnerability exists in Splunk MCP Server app versions below 0.2.4, where a user with access to the "run_splunk_query" Model Context Protocol (MCP) tool can bypass the SPL command allowlist controls by embedding SPL commands as sub-searches. This allows the user to perform unauthorized actions beyond the intended MCP restrictions.

Impact Analysis

The vulnerability can lead to unauthorized actions being performed within the Splunk MCP Server app, potentially allowing a user to execute commands that should be restricted. This could result in integrity and availability impacts on the system, as indicated by the CVSS score.

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