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CVE-2026-76290— Denial of Service (DoS) through Unauthenticated Package Downloads over the 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 10.4.4、10.2.8 和 10.0.11 之前的版本中，未经认证的用户可以向 Splunk Pipeline Builders 应用中的边缘处理器（Edge Processor）包下载端点发送重复请求。这些请求可能导致 Splunk 守护进程消耗过多的系统资源，进而造成服务无响应。 该漏洞之所以存在，是因为该端点无需身份验证即可接受包下载请求，并且会在内存中读取并执行每个请求对应完整包的 Base64 编码操作。 升级后，请准备所有现有的边缘处理器实例，为边缘处理器包下

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-76290

Vulnerability Information
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Vulnerability Title
Denial of Service (DoS) through Unauthenticated Package Downloads over the REST API in Splunk Enterprise
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.4.4, 10.2.8, and 10.0.11, an unauthenticated user could send repeated requests to the Edge Processor package download endpoint in the Splunk Pipeline Builders app. The requests could cause the Splunk daemon to consume excessive system resources and potentially stop responding. The vulnerability is possible because the endpoint accepts package download requests without authentication and reads and base64-encodes the complete package in memory for each request. After upgrading, prepare all existing Edge Processor instances, turn on authentication for Edge Processor package downloads, and restart Splunk Enterprise. For more information, see Enable authentication for Edge Processor package downloads (https://help.splunk.com/en/data-management/process-data-at-the-edge/use-edge-processors-for-splunk-enterprise/10.4/administer-edge-processors/enable-authentication-for-edge-processor-package-downloads).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk Enterprise 10.4 ~ 10.4.4 -

II. Public POCs for CVE-2026-76290

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III. Intelligence Information for CVE-2026-76290

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Vendor Advisories for CVE-2026-76290 (1)

Same Patch Batch · Splunk · 2026-10-21 · 31 CVEs total

CVE-2026-76291 8.8 HIGH Improper Access Control through Scheduled Search Safeguards in Splunk Enterprise
CVE-2026-76298 8.8 HIGH Use of Hard-coded Cryptographic Key in the PostgreSQL Sidecar Service in Splunk Enterprise
CVE-2026-76306 7.5 HIGH Information Disclosure through REST API Query Filters in Splunk SOAR
CVE-2026-76288 7.5 HIGH Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterpris
CVE-2026-76307 7.2 HIGH Sensitive Information Disclosure through REST API Query Filters in Splunk SOAR
CVE-2026-76293 7.2 HIGH Remote Code Execution (RCE) through Splunk Web Manager Extensible Markup Language (XML) in
CVE-2026-76289 6.5 MEDIUM Denial of Service (DoS) through the REST API in Splunk Enterprise
CVE-2026-76305 6.5 MEDIUM Improper Access Control during App Downloads in Splunk SOAR
CVE-2026-76292 6.5 MEDIUM Missing Authorization through REST API Endpoints in Splunk Secure Gateway
CVE-2026-76308 6.5 MEDIUM Missing Authorization through the REST API in Splunk SOAR
CVE-2026-76406 5.9 MEDIUM Information Disclosure through REST API Authentication in Splunk SOAR
CVE-2026-76303 5.7 MEDIUM Stored Cross-Site Scripting (XSS) through App Documentation in Splunk SOAR
CVE-2026-76287 5.4 MEDIUM Authorization Bypass in the Data Management REST API in Splunk Enterprise
CVE-2026-76296 4.3 MEDIUM Missing Authorization through Sourcetype Renaming in Splunk Web for Splunk Enterprise
CVE-2026-76295 4.3 MEDIUM SPL Injection through the REST API in Splunk Secure Gateway
CVE-2026-76304 4.3 MEDIUM Sensitive Information Disclosure through Automation Broker Configuration in Splunk SOAR
CVE-2026-76294 4.3 MEDIUM Improper Access Control in Field Extraction Management in Splunk Enterprise
CVE-2026-76297 4.2 MEDIUM Federated Search Provider State Change through Cross-Site Request Forgery (CSRF) in Splunk
CVE-2026-76526 Improper Neutralization in Splunk SOAR
CVE-2026-76302 Security Hardening in Splunk Enterprise - October 2026

Showing top 20 of 31 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-400

V. Comments for CVE-2026-76290

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