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CVE-2023-41265 — An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for…

Key facts

CVE-2023-41265 is a Critical (9.6) vulnerability: An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-07), confirming active exploitation in the wild, and is linked to known ransomware campaigns.

Actively exploited — on the CISA KEV catalog

CVE-2023-41265 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-07), confirming exploitation in the wild. It is linked to known ransomware campaigns. Federal remediation deadline: 2023-12-28. Prioritise patching and deploy the detection and prevention rules below.
CVE CVE-2023-41265
Severity Critical (9.6)
CISA KEV Actively exploited (added 2023-12-07) · ransomware
Detection / prevention —
PoC poc.py
Source 2023/CVE-2023-41265/

Details

English | 한국어

Description

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunneling HTTP requests in the raw HTTP request. This allows them to send requests that get executed by the backend server hosting the repository application. This is fixed in August 2023 IR, May 2023 Patch 4, February 2023 Patch 8, November 2022 Patch 11, and August 2022 Patch 13.

Vulnerability Details

Property Value
CVE ID CVE-2023-41265
CVSS Score 9.6

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2023/CVE-2023-41265/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-2023-41265

# 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://community.qlik.com/t5/Official-Support-Articles/Critical-Security-fixes-for-Qlik-Sense-Enterprise-for-Windows/ta-p/2110801
  • https://community.qlik.com/t5/Release-Notes/tkb-p/ReleaseNotes
  • https://community.qlik.com/t5/Official-Support-Articles/Critical-Security-fixes-for-Qlik-Sense-Enterprise-for-Windows/ta-p/2110801
  • https://community.qlik.com/t5/Release-Notes/tkb-p/ReleaseNotes
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41265

Generated by PoC Generator on 2026-07-08T08:41:33.222116587

Frequently asked questions

What is CVE-2023-41265?

CVE-2023-41265 is a Critical (9.6) vulnerability: An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-07), confirming active exploitation in the wild, and is linked to known ransomware campaigns.

How do I detect CVE-2023-41265?

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-2023-41265?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

Is CVE-2023-41265 actively exploited?

Yes. CVE-2023-41265 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2023-12-07, which means it has been exploited in the wild. CISA also links it to known ransomware campaigns. CISA set a federal remediation deadline of 2023-12-28. Prioritise patching and deploy the detection and prevention rules above.

For authorized security testing and research only. See the full source and NVD record.