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CVE-2026-76268— Missing Authentication for Critical Function in the Patroni REST API 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.

在 Splunk Enterprise 10.4.3 以下版本及 10.2.7 以下版本中，具有网络访问权限的未授权用户可通过搜索头集群成员上的 Patroni 表示状态传输（REST）应用程序编程接口（API）执行攻击者控制的操作系统命令。该漏洞的成因在于，该接口对关键配置操作未实施身份验证。更多信息请参阅 Splunk 文档中的“Sidecar 配置设置”（https://help.splunk.com/en/data-management/splunk-enterprise-admin-manual/10.2

CVSS 9.8 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-76268

Vulnerability Information
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Vulnerability Title
Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.4.3 and 10.2.7, an unauthenticated user with network access to the Patroni Representational State Transfer (REST) Application Programming Interface (API) on a search head cluster member could execute attacker-controlled operating-system commands. The vulnerability is possible because this interface does not require authentication for critical configuration operations. For more information see Sidecar configuration settings (https://help.splunk.com/en/data-management/splunk-enterprise-admin-manual/10.2/splunk-sidecars/sidecar-configuration-settings) in the Splunk documentation. Splunk Enterprise versions 10.0.x and 9.4.x are not affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk Enterprise 10.4 ~ 10.4.3 -

II. Public POCs for CVE-2026-76268

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III. Intelligence Information for CVE-2026-76268

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Other References for CVE-2026-76268 (1)

Same Patch Batch · Splunk · 2026-10-07 · 23 CVEs total

CVE-2026-76266 7.7 HIGH Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise
CVE-2026-76270 6.5 MEDIUM Structured Query Language (SQL) Injection in the SPL2 Module Catalog in Splunk Enterprise
CVE-2026-76265 6.5 MEDIUM Improper Access Control through REST API Endpoints in Splunk Secure Gateway
CVE-2026-76271 6.5 MEDIUM Denial of Service (DoS) in the Discover Splunk Observability Cloud app for Splunk Enterpri
CVE-2026-76269 6.5 MEDIUM Improper Access Control in Search Job Retrieval through the REST API in Splunk Enterprise
CVE-2026-76274 6.5 MEDIUM Server-Side Request Forgery (SSRF) through the REST API in Splunk App for Splunk Observabi
CVE-2026-76280 6.3 MEDIUM Incorrect Permission Assignment for App Key Value Store Collections in Splunk Secure Gatew
CVE-2026-76286 5.3 MEDIUM Server-Side Request Forgery (SSRF) through Custom API Tools in Splunk MCP Server
CVE-2026-76273 4.3 MEDIUM Improper Input Validation through the collect Command in Splunk Enterprise
CVE-2026-76275 4.3 MEDIUM Improper Authorization in Search Job Listings through the REST API in Splunk Enterprise
CVE-2026-76272 4.3 MEDIUM Missing Access Control through the REST API in Splunk Secure Gateway
CVE-2026-76279 4.3 MEDIUM Improper Input Validation of Index Names through the collect Command in Splunk Enterprise
CVE-2026-76276 4.3 MEDIUM Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web f
CVE-2026-76264 4.3 MEDIUM Improper Authorization through the REST API in Splunk Enterprise
CVE-2026-76267 4.3 MEDIUM Log Injection through the REST API in Splunk App for Splunk O11y Cloud
CVE-2026-76278 4.3 MEDIUM Authorization Bypass in SPL2 Module Permissions in Splunk Enterprise
CVE-2026-76277 4.1 MEDIUM Improper Input Validation of Native Splunk Usernames through the REST API in Splunk Enterp
CVE-2026-76284 Improper Neutralization in Splunk Enterprise
CVE-2026-76283 Protection Mechanism Failure in Splunk Enterprise
CVE-2026-76281 Improper Access Control in Splunk Enterprise

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-306

V. Comments for CVE-2026-76268

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