description: "CVE-2026-76391 is a High (8.3) vulnerability: In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the 'admin' or…. This entry ships a detection-only PoC and a Do..." keywords: "CVE-2026-76391, CVE-2026-76391 detection, CVE-2026-76391 poc, In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or…"
CVE-2026-76391 — In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or…¶
Key facts
CVE-2026-76391 is a High (8.3) vulnerability: In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or…. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-76391 |
| Severity | High (8.3) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-76391/ |
Details¶
English | 한국어
Description¶
In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or "power" Splunk roles could run searches with system-level privileges, access all relevant data, affect system integrity, and read or delete search jobs belonging to other users through Agent Run History. The improper privilege management is possible because the Agent Run History handler replaces the calling user session key with a system authentication token before it performs search operations. For more information see AI Toolkit Agent Launchpad (https://help.splunk.com/en/splunk-enterprise/apply-machine-learning/use-ai-toolkit/6.0.0/ai-toolkit-connections-containers-and-agents/ai-toolkit-agent-launchpad) in the Splunk documentation.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-76391 |
| CVSS Score | 8.3 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-76391/poc.py
Usage¶
# Run PoC against target
python3 poc.py --target <TARGET_URL>
# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>
⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.
Test Lab¶
This repository includes a Docker-based test environment with both vulnerable and patched applications.
Quick Start¶
# Clone and navigate to CVE directory
cd CVE-2026-76391
# Start both applications
docker-compose up -d
# Run tests
./run-tests.sh # Linux/Mac
./run-tests.ps1 # Windows PowerShell
Application Endpoints¶
| Application | URL | Status |
|---|---|---|
| Vulnerable App | http://localhost:8080 | Shows vulnerability |
| Patched App | http://localhost:8081 | Demonstrates fix |
Directory Structure¶
├── README.md # English documentation
├── README_KO.md # Korean documentation
├── poc.py # PoC detection script
├── docker-compose.yml # Container orchestration
├── run-tests.sh # Linux/Mac test runner
├── run-tests.ps1 # Windows test runner
├── vulnerable-app/ # Vulnerable version
│ ├── app.py
│ ├── Dockerfile
│ └── requirements.txt
└── patched-app/ # Fixed version
├── app.py
├── Dockerfile
└── requirements.txt
References¶
- https://advisory.splunk.com/advisories/SVD-2026-0808
Generated by PoC Generator on 2026-08-23T12:43:13.664841453
Frequently asked questions¶
What is CVE-2026-76391?¶
CVE-2026-76391 is a High (8.3) vulnerability: In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or…. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-76391?¶
Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.
How do I block or mitigate CVE-2026-76391?¶
Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.
For authorized security testing and research only. See the full source and NVD record.