CVE-2026-20239— Sensitive Information Disclosure through Log Files in Splunk Enterprise
Possible ATT&CK Techniques 1AI
T1005 · Data from Local SystemAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Splunk | Splunk Cloud Platform | 10.3.2512< 10.3.2512.8 | affected |
10.2.2510< 10.2.2510.11 | affected | ||
10.1.2507< 10.1.2507.21 | affected | ||
10.0.2503< 10.0.2503.13 | affected | ||
| Splunk | Splunk Enterprise | 10.2< 10.2.2 | affected |
10.0< 10.0.5 | affected |
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I. Basic Information for CVE-2026-20239
Vulnerability Information
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Vulnerability Title
Sensitive Information Disclosure through Log Files in Splunk Enterprise
Source: NVD (National Vulnerability Database)
Vulnerability Description
In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the `_internal` index could view session cookies and response bodies that contain sensitive data.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过日志文件的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Splunk Cloud Platform和Splunk Enterprise 日志信息泄露漏洞
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 Enterprise 10.2.2之前版本和10.0.5之前版本以及Splunk Cloud Platform 10.3.2512.8之前版本、10.2.2510.11之前版本、10.1.2507.21之前版本和10.0.2503.13之前版本存
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 | 10.3.2512 ~ 10.3.2512.8 | - |
II. Public POCs for CVE-2026-20239
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Vendor Advisories for CVE-2026-20239 (1)
Same Patch Batch · Splunk · 2026-05-20 · 3 CVEs total
| CVE-2026-20240 | 7.1 HIGH | Denial of Service through coldToFrozen.sh Script in Splunk Enterprise |
| CVE-2026-20238 | 6.5 MEDIUM | Improper Access Control through Role Inheritance in Splunk AI Toolkit app |
IV. Related Vulnerabilities
Same product: Splunk Enterprise
- CVE-2026-20240
Denial of Service through coldToFrozen.sh Script in Splunk E - CVE-2026-20203
Improper Access Control in Data Model Acceleration in Splunk - CVE-2026-20204
Improper Handling and Insufficient Isolation of Specific Tem - CVE-2026-20202
Improper Input Validation during User Account Creation in Sp - CVE-2026-20163
Remote Command Execution (RCE) through the '/splunkd/__uploa
Same vendor: Splunk
- CVE-2026-20238
Improper Access Control through Role Inheritance in Splunk A - CVE-2026-20240
Denial of Service through coldToFrozen.sh Script in Splunk E - CVE-2026-20205
Sensitive Information Disclosure in ''_internal'' index in S - CVE-2026-20203
Improper Access Control in Data Model Acceleration in Splunk - CVE-2026-20204
Improper Handling and Insufficient Isolation of Specific Tem
V. Comments for CVE-2026-20239
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