CVE-2025-13985
📋 TL;DR
This CVE describes an incorrect authorization vulnerability in Drupal's Entity Share module that allows forceful browsing (unauthorized access to restricted content). Attackers can bypass intended access controls to view or manipulate content they shouldn't have permission to access. This affects all Drupal sites using vulnerable versions of the Entity Share module.
💻 Affected Systems
- Drupal Entity Share module
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain unauthorized access to sensitive content, potentially exposing confidential data, intellectual property, or user information that should be protected by access controls.
Likely Case
Unauthorized users access content intended for specific roles or users, potentially exposing internal documents, draft content, or restricted site areas.
If Mitigated
With proper access controls and monitoring, impact is limited to unauthorized viewing of non-critical content with audit trails for investigation.
🎯 Exploit Status
Exploitation requires understanding of Drupal's entity structure and access patterns. The vulnerability is in authorization logic, making it relatively straightforward to exploit once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.13.0
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-123
Restart Required: No
Instructions:
1. Update the Entity Share module to version 3.13.0 or later via Drupal's update manager or Composer. 2. Clear Drupal caches after update. 3. Verify module functionality post-update.
🔧 Temporary Workarounds
Disable Entity Share Module
allTemporarily disable the vulnerable module until patching is possible
drush pm:disable entity_share
Implement Additional Access Controls
allAdd custom access checks or permissions to restrict entity access
🧯 If You Can't Patch
- Implement strict network segmentation to limit access to Drupal administration interfaces
- Enable detailed audit logging for entity access attempts and monitor for suspicious patterns
🔍 How to Verify
Check if Vulnerable:
Check Entity Share module version in Drupal's Extend page or via 'drush pm:list | grep entity_share'Check Version:
drush pm:list --fields=name,version | grep entity_shareVerify Fix Applied:
Confirm Entity Share module version is 3.13.0 or higher and test access controls for previously vulnerable entities📡 Detection & Monitoring
Log Indicators:
- Multiple failed access attempts to restricted entities followed by successful access
- Access to entity endpoints by users without proper permissions
Network Indicators:
- Unusual patterns of requests to entity endpoints
- Requests bypassing normal authentication flows
SIEM Query:
source="drupal" ("entity_share" OR "entity access") AND (status=200 OR status=403) | stats count by user, path