CVE-2025-43765
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in Liferay Portal and DXP allows unauthenticated remote attackers to inject malicious JavaScript into web content text fields. This affects Liferay Portal 7.4.0-7.4.3.131 and multiple DXP versions from 2024.Q1 through 2024.Q4. Attackers can execute arbitrary scripts in victims' browsers when they view the compromised content.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on user systems through browser exploitation.
Likely Case
Session hijacking, credential theft, defacement of web content, or redirection to phishing sites targeting portal users.
If Mitigated
Limited impact with proper content security policies, input validation, and output encoding in place, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires injecting JavaScript into text fields, which is straightforward for attackers with basic web knowledge. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply Liferay Portal 7.4.3.132+ or appropriate DXP fix packs as specified in vendor advisory
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43765
Restart Required: No
Instructions:
1. Review vendor advisory for specific fix pack requirements. 2. Download appropriate fix pack from Liferay customer portal. 3. Apply fix pack following Liferay's deployment procedures. 4. Test functionality after deployment.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution from untrusted sources
Add 'Content-Security-Policy' header with appropriate directives in web server configuration
Input Validation Filter
allImplement server-side input validation to sanitize text field inputs
Configure input validation filters in Liferay to strip or encode script tags
🧯 If You Can't Patch
- Restrict access to web content creation/modification to authenticated users only
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check Liferay version via Control Panel > Configuration > Server Administration > System InformationCheck Version:
Check via Liferay Control Panel or examine liferay-portal.xml version propertyVerify Fix Applied:
Verify version is updated beyond vulnerable ranges and test text fields for script injection📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to web content endpoints with script tags
- Multiple failed script injection attempts in access logs
Network Indicators:
- HTTP requests containing JavaScript payloads in text parameters
- Unexpected script tags in web content responses
SIEM Query:
source="liferay" AND (http_method="POST" AND uri_path="/web-content" AND (body="<script>" OR body="javascript:"))