CVE-2026-1964
📋 TL;DR
This vulnerability in WeKan allows improper access controls through the REST endpoint, potentially enabling unauthorized access to board data. It affects WeKan installations up to version 8.20. Remote attackers could exploit this to access or manipulate board information they shouldn't have permission to view.
💻 Affected Systems
- WeKan
📦 What is this software?
Wekan by Wekan Project
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized users gain full access to sensitive board data, including confidential information, and potentially modify or delete board contents.
Likely Case
Limited unauthorized access to some board data, potentially exposing internal project information or user details.
If Mitigated
No impact if proper network segmentation and access controls prevent unauthorized access attempts.
🎯 Exploit Status
Remote exploitation is possible but requires some understanding of WeKan's REST API structure
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.21
Vendor Advisory: https://github.com/wekan/wekan/releases/tag/v8.21
Restart Required: Yes
Instructions:
1. Backup your WeKan data and configuration. 2. Stop the WeKan service. 3. Update to WeKan version 8.21 using your package manager or manual installation. 4. Restart the WeKan service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Restrict REST API Access
linuxUse network controls to limit access to WeKan's REST API endpoints
iptables -A INPUT -p tcp --dport 3000 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 3000 -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WeKan from untrusted networks
- Add additional authentication/authorization layer in front of WeKan REST endpoints
🔍 How to Verify
Check if Vulnerable:
Check WeKan version: if version is 8.20 or lower, system is vulnerableCheck Version:
Check WeKan admin interface or run: node -e "console.log(require('./package.json').version)" from WeKan directoryVerify Fix Applied:
Verify version is 8.21 or higher and test REST endpoint access controls📡 Detection & Monitoring
Log Indicators:
- Unusual REST API access patterns
- Failed authentication attempts followed by successful board access
- Access to /api/boards/ endpoints from unauthorized IPs
Network Indicators:
- Unusual traffic to WeKan REST API endpoints
- Multiple failed authentication attempts
SIEM Query:
source="wekan" AND (uri_path="/api/boards/*" OR method="POST" OR method="PUT" OR method="DELETE") AND NOT user IN authorized_users