CVE-2025-31675
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in Drupal core that allows attackers to inject malicious scripts into web pages. The vulnerability affects Drupal installations running affected versions, potentially compromising user sessions and data. All Drupal sites using vulnerable versions are at risk.
💻 Affected Systems
- Drupal core
📦 What is this software?
Drupal by Drupal
Drupal by Drupal
Drupal by Drupal
Drupal by Drupal
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers inject malicious scripts to steal user session cookies or credentials, perform actions on behalf of users, or deliver malware through the compromised site.
If Mitigated
With proper input validation and output encoding controls, the impact is limited to potential script execution in specific contexts, but user data remains protected.
🎯 Exploit Status
XSS vulnerabilities typically have low exploitation complexity and can be exploited without authentication in many cases.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Drupal 10.3.14, 10.4.5, 11.0.13, 11.1.5 or later
Vendor Advisory: https://www.drupal.org/sa-core-2025-004
Restart Required: No
Instructions:
1. Backup your Drupal site and database. 2. Update Drupal core to the patched version using Composer or manual update. 3. Clear all caches. 4. Verify the update was successful.
🔧 Temporary Workarounds
Input sanitization
allImplement additional input validation and output encoding for user-supplied data
Content Security Policy
allImplement strict CSP headers to mitigate XSS impact
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict user input fields and implement strict output encoding
🔍 How to Verify
Check if Vulnerable:
Check Drupal version in admin/reports/status or via drush status commandCheck Version:
drush status | grep 'Drupal version' or check admin/reports/status pageVerify Fix Applied:
Verify Drupal version is 10.3.14+, 10.4.5+, 11.0.13+, or 11.1.5+📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript payloads
- Multiple failed input validation attempts
Network Indicators:
- HTTP requests containing script tags or JavaScript in parameters
- Unusual outbound connections from user browsers
SIEM Query:
web.logs: * AND (script OR javascript OR onload OR onerror) AND status:200