CVE-2026-52876 — Streambert is a cross-platform Electron Desktop App to stream and download video content.¶
Key facts
CVE-2026-52876 is a High (8.8) vulnerability: Streambert is a cross-platform Electron Desktop App to stream and download video content.. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-52876 |
| Severity | High (8.8) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-52876/ |
Details¶
English | 한국어
Description¶
Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to version 2.6.0, the open-path-at-time IPC handler in src/ipc/player.js accepts a renderer-controlled filePath without validating its type or location. If the mpv or VLC launch attempts are skipped or fail, the handler passes filePath to Electron's shell.openPath. A compromised renderer can provide the path of a local executable, script, shortcut, or other file with an executing default handler, causing the operating system to launch it with the privileges of the StreamBERT process and enabling escape from the renderer sandbox. This issue is fixed in version 2.6.0.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-52876 |
| CVSS Score | 8.8 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-52876/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-2026-52876
# 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://github.com/truelockmc/streambert/commit/43566ed031183b046675761c9813c5379b619269
- https://github.com/truelockmc/streambert/pull/149
- https://github.com/truelockmc/streambert/releases/tag/2.6.0
- https://github.com/truelockmc/streambert/security/advisories/GHSA-85vf-2qwc-qpm4
Generated by PoC Generator on 2026-08-25T18:34:34.688720975
Frequently asked questions¶
What is CVE-2026-52876?¶
CVE-2026-52876 is a High (8.8) vulnerability: Streambert is a cross-platform Electron Desktop App to stream and download video content.. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-52876?¶
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-2026-52876?¶
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.