CVE-2026-55234 — Wekan is open source kanban built with Meteor.¶

Key facts

CVE-2026-55234 is a High (8.5) vulnerability: Wekan is open source kanban built with Meteor.. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-55234
Severity	High (8.5)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-55234/

Details¶

English | 한국어

Description¶

Wekan is open source kanban built with Meteor. Prior to 9.37, Wekan DDP update allow rules in server/permissions/cards.js, server/permissions/lists.js, and server/permissions/swimlanes.js authorize against the stored source boardId and do not validate a new boardId in the update modifier. Any authenticated user with write access to their own board can call /cards/update, /lists/update, or /swimlanes/update to move cards, lists, or swimlanes into a private board they are not a member of. This issue is fixed in version 9.37.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-55234
Type	RCE
CVSS Score	8.5

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-55234/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-2026-55234

# 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/wekan/wekan/commit/d369a3614a4737c29d48a6345a790edf2506ddae
https://github.com/wekan/wekan/releases/tag/v9.37
https://github.com/wekan/wekan/security/advisories/GHSA-gm7v-pc38-53jr

Generated by PoC Generator on 2026-07-16T09:55:38.891742816

Frequently asked questions¶

What is CVE-2026-55234?¶

CVE-2026-55234 is a High (8.5) vulnerability: Wekan is open source kanban built with Meteor.. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-55234?¶

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-2026-55234?¶

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.