CVE-2025-20381 (GCVE-0-2025-20381)

Vulnerability from cvelistv5 – Published: 2025-12-03 17:00 – Updated: 2025-12-03 21:29
VLAI?
Summary
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.
Severity ?
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-863 - The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
Assigner
References
Impacted products
Vendor Product Version
Splunk Splunk MCP Server Affected: 0.2 , < 0.2.4 (custom)
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Credits
Saket Pandey, Splunk
Show details on NVD website
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.