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CVE-2026-20203— Improper Access Control in Data Model Acceleration in Splunk Enterprise

Quick assessment

Affected
Splunk Splunk Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Cloud Platform和Splunk Enterprise存在安全漏洞，该漏洞源于访问控制不当，可能导致低权限用户开启或关闭数据模型加速。以下版本受到影响：Splunk Enterprise 10.2.2之前版本、10.0.5之前版本、9.

CVSS 4.3 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1136 · Create Account
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I. Basic Information for CVE-2026-20203

Vulnerability Information
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Vulnerability Title
Improper Access Control in Data Model Acceleration in Splunk Enterprise
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles, has write permission on the app, and does not hold the high-privilege capability `accelerate_datamodel`, could turn on or off Data Model Acceleration due to improper access control.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Splunk Cloud Platform和Splunk Enterprise 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Cloud Platform和Splunk Enterprise存在安全漏洞，该漏洞源于访问控制不当，可能导致低权限用户开启或关闭数据模型加速。以下版本受到影响：Splunk Enterprise 10.2.2之前版本、10.0.5之前版本、9.
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk Enterprise 10.2 ~ 10.2.2 -
Splunk Splunk Cloud Platform 10.4.2603 ~ Not Affected -

II. Public POCs for CVE-2026-20203

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III. Intelligence Information for CVE-2026-20203

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Vendor Advisories for CVE-2026-20203 (1)

Same Patch Batch · Splunk · 2026-04-15 · 4 CVEs total

CVE-2026-20205 7.2 HIGH Sensitive Information Disclosure in ''_internal'' index in Splunk MCP Server app
CVE-2026-20204 7.1 HIGH Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterpr
CVE-2026-20202 6.6 MEDIUM Improper Input Validation during User Account Creation in Splunk Enterprise

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-284

V. Comments for CVE-2026-20203

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