CVE-2025-20381 — MEDIUM (5.4)

Vulnerability 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.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

LOW

Related Weaknesses (CWE)

CWE-863

References

https://advisory.splunk.com/advisories/SVD-2025-1210

FAQ

What is CVE-2025-20381?

CVE-2025-20381 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 co...

How severe is CVE-2025-20381?

CVE-2025-20381 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-20381?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.