CVE-2025-31685
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in Drupal Open Social that allows Forceful Browsing (direct access to restricted pages without proper authentication). All Open Social installations running vulnerable versions are affected, potentially allowing unauthorized users to access privileged functionality.
💻 Affected Systems
- Drupal Open Social
📦 What is this software?
Open Social by Getopensocial
Open Social by Getopensocial
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access administrative interfaces, modify user permissions, exfiltrate sensitive user data, or take full control of the Open Social instance.
Likely Case
Unauthorized users accessing restricted content, viewing private user information, or performing actions reserved for authenticated users.
If Mitigated
With proper network segmentation and additional authentication layers, impact would be limited to the Open Social application only.
🎯 Exploit Status
Forceful browsing typically requires minimal technical skill - attackers can simply navigate to restricted URLs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.3.11 or 12.4.10
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-014
Restart Required: No
Instructions:
1. Update Open Social to version 12.3.11 (for 12.3.x branch) or 12.4.10 (for 12.4.x branch). 2. Clear Drupal caches. 3. Verify the update was successful.
🔧 Temporary Workarounds
Web Server Access Control
allImplement URL-based access restrictions at the web server level to block access to restricted paths.
# Apache example: RewriteRule ^/admin.* - [F]
# Nginx example: location ~ ^/admin { deny all; }
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Open Social from untrusted networks
- Add additional authentication layer (like HTTP basic auth) for administrative interfaces
🔍 How to Verify
Check if Vulnerable:
Check Open Social version in Drupal admin interface at /admin/reports/status or via drush: drush pm-list | grep open_socialCheck Version:
drush pm-list | grep open_socialVerify Fix Applied:
Verify version is 12.3.11 or higher (for 12.3.x) or 12.4.10 or higher (for 12.4.x)📡 Detection & Monitoring
Log Indicators:
- 403 errors for authenticated-only URLs from unauthenticated users
- Unusual access patterns to administrative paths
Network Indicators:
- HTTP requests to /admin/* paths from unauthorized IPs
- Burst of 403 status codes
SIEM Query:
web_access_logs status=403 AND (uri_path="/admin/*" OR uri_path="/user/*/edit")