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CVE-2026-76395— Remote Code Execution (RCE) through Deserialization of Untrusted Data in the Model Loading REST API in Splunk AI Toolkit

Quick assessment

Affected
Splunk Splunk AI Toolkit
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 AI Toolkit 6.0.0 之前的版本中，拥有“power”角色的 Splunk 用户可通过加载包含精心构造的稀疏矩阵数据的模型文件，在 Splunk 服务器上执行任意代码。由于 Splunk AI Toolkit 中的模型编解码器在未防范嵌入的 pickle 内容的情况下反序列化稀疏矩阵数据，导致可以反序列化不受信任的数据。有关更多信息，请参阅 Splunk 文档中的“排查 Splunk Machine Learning Toolkit”（链接：https://help.splunk.co

CVSS 8.8 · High EPSS 0.49% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
Splunk Splunk AI Toolkit 5.7< 6.0.0 affected
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I. Basic Information for CVE-2026-76395

Vulnerability Information
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Vulnerability Title
Remote Code Execution (RCE) through Deserialization of Untrusted Data in the Model Loading REST API in Splunk AI Toolkit
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk AI Toolkit versions below 6.0.0, a user who holds the "power" Splunk role could execute arbitrary code on the Splunk server by loading a model file containing crafted sparse matrix data. The deserialization of untrusted data is possible because a model codec in Splunk AI Toolkit deserializes sparse matrix data without guarding against embedded pickle content. For more information see Troubleshoot the Splunk Machine Learning Toolkit (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/machine-learning-toolkit-user-guide/5.5.0/troubleshooting-mltk/troubleshoot-the-splunk-machine-learning-toolkit) in the Splunk documentation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk AI Toolkit 5.7 ~ 6.0.0 -

II. Public POCs for CVE-2026-76395

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III. Intelligence Information for CVE-2026-76395

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Vendor Advisories for CVE-2026-76395 (1)

Same Patch Batch · Splunk · 2026-08-19 · 110 CVEs total

CVE-2026-76312 9.4 CRITICAL Improper Access Control through Embedded Reports in Splunk Enterprise
CVE-2026-76311 9.4 CRITICAL Improper Access Control in Embedded Report Dispatch Archives in Splunk Enterprise
CVE-2026-76310 9.4 CRITICAL Improper Access Control through Embedded Report REST API Requests in Splunk Enterprise
CVE-2026-76404 9.1 CRITICAL Remote Code Execution (RCE) through Deserialization of Untrusted Data in Splunk MCP Server
CVE-2026-76319 8.8 HIGH Remote Code Execution (RCE) through Federated Search in Splunk Enterprise
CVE-2026-76316 8.8 HIGH Stored SPL Injection through Deployment Server Broker Registration in Splunk Enterprise
CVE-2026-76351 8.8 HIGH Server-Side Request Forgery (SSRF) through the Report Notification REST API in Splunk Secu
CVE-2026-76350 8.8 HIGH Improper Privilege Management through PDF Attachments for Email Alert Actions in Splunk En
CVE-2026-76253 8.8 HIGH Privilege Escalation through Scheduled Search Alert Action Configuration in Splunk Enterpr
CVE-2026-76389 8.8 HIGH Server-Side Request Forgery (SSRF) through the REST API in Cisco Talos Intelligence for En
CVE-2026-76315 8.8 HIGH Code Injection through Splunk Web Manager Configuration in Splunk Enterprise
CVE-2026-76313 8.8 HIGH Remote Code Execution (RCE) through the REST API in Splunk Enterprise
CVE-2026-76259 8.8 HIGH Improper Privilege Management on the Management Port in Splunk Enterprise for Windows
CVE-2026-76335 8.8 HIGH Remote Code Execution (RCE) through Splunk Web Manager Configuration in Splunk Enterprise
CVE-2026-76317 8.8 HIGH Path Traversal through the Lookup Configuration REST API in Splunk Enterprise
CVE-2026-76314 8.8 HIGH Remote Code Execution (RCE) through Splunk Web Manager Configuration in Splunk Enterprise
CVE-2026-76352 8.8 HIGH Improper Authorization through the REST API in Splunk Enterprise
CVE-2026-76394 8.3 HIGH Missing Authorization in Container and Connection Management through the REST API in Splun
CVE-2026-76391 8.3 HIGH Improper Privilege Management through Agent Run History in Splunk AI Toolkit
CVE-2026-76402 8.2 HIGH Server-Side Request Forgery (SSRF) through the REST API in Splunk Connect for Kafka

Showing top 20 of 110 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Splunk AI Toolkit
Same vendor: Splunk
Same weakness: CWE-502

V. Comments for CVE-2026-76395

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