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Vulnerabilities CVE-2026-76404

CVE-2026-76404

Critical
Open
TLP:CLEAR

Remote Code Execution (RCE) through Deserialization of Untrusted Data in Splunk MCP Server app

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Description

In Splunk MCP Server app versions below 1.2.1, a user who holds the "admin" Splunk role could execute arbitrary commands on the underlying operating system. The vulnerability is possible because of missing input validation in the app's credential management component, which deserializes stored data without checking whether the content is of the expected type.

Details

CVSS Score
9.1
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Aug 19, 2026
Last Modified
Aug 19, 2026
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