CVE-2025-48920
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in the Drupal etracker module that allows attackers to inject malicious scripts into web pages. The vulnerability affects all versions of the etracker module before 3.1.0. Attackers can exploit this to steal user credentials, hijack sessions, or perform actions on behalf of authenticated users.
💻 Affected Systems
- Drupal etracker module
📦 What is this software?
Etracker by Etracker
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over the Drupal site, install backdoors, exfiltrate sensitive data, or use the compromised site to attack visitors.
Likely Case
Attackers will typically use this to steal user session cookies and credentials, perform account takeovers, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, the risk is limited to potential data leakage from the specific vulnerable component.
🎯 Exploit Status
XSS vulnerabilities are commonly exploited and require minimal technical skill. The advisory provides enough detail for attackers to craft exploits.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.0
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-074
Restart Required: No
Instructions:
1. Log into your Drupal admin panel. 2. Navigate to Extend > Update. 3. Check for available updates. 4. Update etracker module to version 3.1.0 or later. 5. Clear all caches from Configuration > Development > Performance.
🔧 Temporary Workarounds
Disable etracker module
allTemporarily disable the vulnerable module until patching is possible
drush pm-disable etracker
Implement Content Security Policy
allAdd CSP headers to mitigate XSS impact by restricting script execution
Add 'Content-Security-Policy' header to web server configuration
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Enable Drupal's built-in XSS protection features and ensure all user input is properly sanitized
🔍 How to Verify
Check if Vulnerable:
Check the etracker module version in Drupal admin at Extend > Installed modules or use: drush pm-list | grep etrackerCheck Version:
drush pm-list --fields=name,version | grep etrackerVerify Fix Applied:
Confirm etracker module version is 3.1.0 or higher and test the previously vulnerable functionality📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in request logs
- Multiple requests with script tags or encoded payloads
- Requests to etracker endpoints with suspicious parameters
Network Indicators:
- HTTP requests containing script tags, javascript: URIs, or encoded HTML entities
- Unusual outbound connections from the Drupal server following etracker requests
SIEM Query:
source="web_server_logs" AND (uri="*etracker*" OR user_agent="*etracker*") AND (request="*<script>*" OR request="*javascript:*" OR request="*%3Cscript%3E*")