CVE-2026-2207
📋 TL;DR
This vulnerability in WeKan versions up to 8.20 allows remote attackers to access sensitive information through the Activity Publication Handler component. The weakness in the activities.js file enables information disclosure, potentially exposing internal data. All users running affected WeKan versions are at risk.
💻 Affected Systems
- WeKan
📦 What is this software?
Wekan by Wekan Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive user data, activity logs, or internal system information that could facilitate further attacks.
Likely Case
Unauthorized access to activity data and potentially user information that could be used for reconnaissance or targeted attacks.
If Mitigated
Limited exposure with proper network segmentation and access controls, though information leakage still possible.
🎯 Exploit Status
Remote exploitation is possible, though specific exploit details are not publicly documented.
🛠️ 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
Network Access Restriction
linuxRestrict network access to WeKan instance to trusted IP addresses only
# Use firewall rules to restrict access
iptables -A INPUT -p tcp --dport [WEKAN_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [WEKAN_PORT] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to WeKan instance
- Monitor access logs for unusual activity patterns and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check WeKan version in admin panel or via package manager. Versions 8.20 and below are vulnerable.Check Version:
dpkg -l | grep wekan # Debian/Ubuntu or check WeKan admin interfaceVerify Fix Applied:
Verify version is 8.21 or higher and check that commit 91a936e07d2976d4246dfe834281c3aaa87f9503 is present.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to /server/publications/activities.js
- Multiple failed access attempts followed by successful information retrieval
Network Indicators:
- Unusual outbound data transfers from WeKan server
- Requests to activity endpoints from unexpected sources
SIEM Query:
source="wekan" AND (uri_path="/server/publications/activities.js" OR activity="information_disclosure")