CVE-2025-20381Network attack vector

Unauthorized SPL actions via nested command bypass

Published Dec 3, 2025 · Updated Dec 3, 2025

Incorrect authorization in Splunk MCP Server App before 0.2.4 allows remote authenticated users to execute disallowed SPL commands. The run_splunk_query tool's allowlist validation fails to inspect SPL commands embedded as subsearches, so nested commands evade its restrictions. Access to the MCP tool is required, and the commands run with permissions beyond the restrictions intended for that tool.

CVSS severity5.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Splunk MCP Server App before 0.2.4 allows remote authenticated users to execute disallowed SPL commands. The run_splunk_query tool's allowlist validation fails to inspect SPL commands embedded as subsearches, so nested commands evade its restrictions. Access to the MCP tool is required, and the commands run with permissions beyond the restrictions intended for that tool.

The record

CVE
CVE-2025-20381
Published
Dec 3, 2025
Updated
Dec 3, 2025
Vendor
Zoom Video Communications, Inc.
Product
Splunk MCP Server App
Classifications
CWE-863, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.2 <0.2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoom Video Communications, Inc. · Splunk MCP Server Appversion=0.2 <0.2.4

Published CVSS scores

5.4SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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