PT-2026-78831 · Splunk · Splunk Mcp Server

·

CVE-2026-76404

·

Published

2026-08-19

·

Updated

2026-08-26

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Splunk MCP Server app versions prior to 1.2.1
Description Users with the admin Splunk role can execute arbitrary commands on the underlying operating system. This occurs due to missing input validation within the credential management component, which performs deserialization—the process of converting stored data back into an object—without verifying if the content matches the expected type.
Recommendations Update Splunk MCP Server app to version 1.2.1 or later.

Fix

RCE

Deserialization of Untrusted Data

Found an issue in the description? Have something to add? Feel free to write us 👾

Weakness Enumeration

Related Identifiers

CVE-2026-76404

Affected Products

Splunk Mcp Server