CVE-2026-68558 — Wekan is open source kanban built with Meteor.¶

Key facts

CVE-2026-68558 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-2026-68558
Severity	High (8.5)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-68558/

Details¶

English | 한국어

Description¶

Wekan is open source kanban built with Meteor. From 8.36 until 9.74, the outgoing webhook Integration URL validator in models/integrations.js checked only the literal URL.hostname against regular expressions, so DNS names such as 169-254-169-254.nip.io passed that first-line check. The delivery path's fetchSafe guard already blocked the reported IPv4 destination, but its separate IPv4-only resolver and duplicated blocklist created inconsistent all-address-family enforcement and drift risk between input-time and connection-time validation. Version 9.74 makes server/lib/ssrfGuard.js resolve all addresses with dns.lookup({ all: true }), validate every result through the shared isIpBlocked logic, pin the connection, and block redirects. This issue is fixed in version 9.74.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-68558
Type	SSRF
CVSS Score	8.5

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-68558/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-2026-68558

# 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/ef845fe4a0adb82af436313310939cd48c0b1347
https://github.com/wekan/wekan/releases/tag/v9.74
https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p
https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p

Generated by PoC Generator on 2026-08-23T20:21:14.65734497

Frequently asked questions¶

What is CVE-2026-68558?¶

CVE-2026-68558 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-2026-68558?¶

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-2026-68558?¶

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.