CVE-2026-20259— Improper Access Control in Splunk Enterprise
Affected Version Matrix 7
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Splunk | Splunk Cloud Platform | 10.3.2512< 10.3.2512.12 | affected |
10.2.2510< 10.2.2510.15 | affected | ||
10.1.2507< 10.1.2507.23 | affected | ||
10.0.2503< 10.0.2503.14 | affected | ||
9.3.2411< 9.3.2411.131 | affected | ||
| Splunk | Splunk Enterprise | 10.2< 10.2.4 | affected |
10.0< 10.0.7 | affected |
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I. Basic Information for CVE-2026-20259
Vulnerability Information
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Vulnerability Title
Improper Access Control in Splunk Enterprise
Source: NVD (National Vulnerability Database)
Vulnerability Description
In Splunk Enterprise versions below 10.2.4 and 10.0.7, and Splunk Cloud Platform versions below 10.4.2604.0, 10.3.2512.12, 10.2.2510.15, 10.1.2507.23, 10.0.2503.14, and 9.3.2411.131, a user who holds a Splunk role that contains the high-privilege capability `edit_saved_search_owner` could reassign saved search ownership to users outside their authorized scope. The ownership reassignment endpoint lacks access control.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Splunk Cloud Platform和Splunk Enterprise 访问控制错误漏洞
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和Splunk Cloud Platform存在访问控制错误漏洞，该漏洞源于所有权重新分配端点缺乏访问控制，可能导致持有edit_saved_search_owner权限的用户将已保存搜索所有权重新分配给授权范围之外的用户。以
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 ~ 10.2.4 | - | |
| Splunk | Splunk Cloud Platform | 10.3.2512 ~ 10.3.2512.12 | - |
II. Public POCs for CVE-2026-20259
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Vendor Advisories for CVE-2026-20259 (1)
Same Patch Batch · Splunk · 2026-06-10 · 10 CVEs total
| CVE-2026-20253 | 9.8 CRITICAL | Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service End |
| CVE-2026-20251 | 8.8 HIGH | Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway |
| CVE-2026-20252 | 7.6 HIGH | Server-Side Request Forgery (SSRF) through Dashboard Studio PDF Export in Splunk Enterpris |
| CVE-2026-20258 | 7.1 HIGH | Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise |
| CVE-2026-20254 | 5.7 MEDIUM | Information Disclosure through External Content Restriction Bypass in Splunk Enterprise |
| CVE-2026-20257 | 5.7 MEDIUM | Improper Input Validation through Classic Dashboard CSS in Splunk Enterprise |
| CVE-2026-20255 | 5.7 MEDIUM | Improper Input Validation through Classic Dashboards in Splunk Enterprise |
| CVE-2026-20256 | 5.7 MEDIUM | Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk En |
| CVE-2026-20260 | 4.3 MEDIUM | Log Injection through HTTP Request Paths in Splunk SOAR |
IV. Related Vulnerabilities
Same product: Splunk Enterprise
- CVE-2026-20258
Stored Cross-Site Scripting (XSS) through Classic Dashboard - CVE-2026-20253
Unauthenticated Arbitrary File Creation and Truncation in a - CVE-2026-20252
Server-Side Request Forgery (SSRF) through Dashboard Studio - CVE-2026-20257
Improper Input Validation through Classic Dashboard CSS in S - CVE-2026-20255
Improper Input Validation through Classic Dashboards in Splu
Same vendor: Splunk
- CVE-2026-20266
OS Command Injection in the btool Configuration Helper in Sp - CVE-2026-20265
Insecure Default Domain Allowlist in Splunk AI Toolkit - CVE-2026-20258
Stored Cross-Site Scripting (XSS) through Classic Dashboard - CVE-2026-20253
Unauthenticated Arbitrary File Creation and Truncation in a - CVE-2026-20260
Log Injection through HTTP Request Paths in Splunk SOAR
Same weakness: CWE-284
- CVE-2026-48908
Joomla Extension - joomshaper.com - Remote Code Execution in - CVE-2026-48939
Joomla Extension - icagenda.com - Remote Code Execution in i - CVE-2026-56082
Capgo - Unauthenticated Cross-Tenant Billing Log Tampering v - CVE-2026-4027
FlexNet Manager Suite Attachment File Disclosure - CVE-2026-4026
FlexNet Manager Suite Privilege Escalation Vulnerability
V. Comments for CVE-2026-20259
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