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    2 vulnerabilities found for Splunk MCP Server app by Splunk

    CVE-2026-76404 (GCVE-0-2026-76404)

    Vulnerability from nvd – Published: 2026-08-19 21:35 – Updated: 2026-08-20 15:26
    VLAI
    Title
    Remote Code Execution (RCE) through Deserialization of Untrusted Data in Splunk MCP Server app
    Summary
    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.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-20 15:09 UTC
    CWE
    • CWE-502 - The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
    Assigner
    References
    Impacted products
    Vendor Product Version
    Splunk Splunk MCP Server app Affected: 1.2 , < 1.2.1 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-19 00:00
    Credits
    Kuniyoshi Noguchi (KuniNogu)
    Show details on NVD website
    To clipboard 

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    CVE-2026-76404 (GCVE-0-2026-76404)

    Vulnerability from cvelistv5 – Published: 2026-08-19 21:35 – Updated: 2026-08-20 15:26
    VLAI
    Title
    Remote Code Execution (RCE) through Deserialization of Untrusted Data in Splunk MCP Server app
    Summary
    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.
    Severity
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-20 15:09 UTC
    CWE
    • CWE-502 - The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
    Assigner
    References
    Impacted products
    Vendor Product Version
    Splunk Splunk MCP Server app Affected: 1.2 , < 1.2.1 (custom)
    		Create a notification for this product.
    Date Public
    2026-08-19 00:00
    Credits
    Kuniyoshi Noguchi (KuniNogu)
    Show details on NVD website
    To clipboard 

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