CVE-2025-31697
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by Drupal Formatter Suite, potentially stealing user credentials or session cookies. It affects all Drupal sites using Formatter Suite versions before 2.1.0. The vulnerability requires user interaction to trigger the malicious script execution.
💻 Affected Systems
- Drupal Formatter Suite
📦 What is this software?
Formatter Suite by Formatter Suite Project
⚠️ 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 would typically steal user session cookies or credentials through phishing-style attacks, potentially gaining unauthorized access to user accounts.
If Mitigated
With proper input validation and output encoding, the risk is limited to users who intentionally bypass security controls or use outdated browsers.
🎯 Exploit Status
XSS vulnerabilities typically have low exploitation complexity, though specific exploitation details for this CVE are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.0
Vendor Advisory: https://www.drupal.org/sa-contrib-2025-026
Restart Required: No
Instructions:
1. Update Drupal Formatter Suite to version 2.1.0 or later via Drupal's update manager. 2. Clear all caches. 3. Verify the update was successful by checking the module version.
🔧 Temporary Workarounds
Disable Formatter Suite
linuxTemporarily disable the vulnerable module until patching is possible
drush pm-disable formatter_suite
Enable Content Security Policy
allImplement CSP headers to restrict script execution sources
🧯 If You Can't Patch
- Implement web application firewall 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 Drupal's Extend page or use 'drush pm-list' to see if Formatter Suite version is below 2.1.0Check Version:
drush pm-list | grep formatter_suiteVerify Fix Applied:
Confirm Formatter Suite version is 2.1.0 or higher via Drupal UI or 'drush pm-list' command📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript payloads
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing suspicious script tags or encoded JavaScript
SIEM Query:
source="web_server_logs" AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")