CVE-2025-62246
📋 TL;DR
This CVE describes stored cross-site scripting (XSS) vulnerabilities in Liferay Portal and DXP where authenticated users can inject malicious scripts into various comment fields. When other users view these comments, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. Affected users include all authenticated users of vulnerable Liferay instances.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could steal administrator session cookies, gain administrative access, and compromise the entire Liferay instance and potentially connected systems.
Likely Case
Attackers steal user session cookies to impersonate victims, access sensitive data, or perform unauthorized actions within the portal.
If Mitigated
With proper input validation and output encoding, malicious scripts would be rendered harmless as text rather than executable code.
🎯 Exploit Status
Exploitation requires authenticated access and knowledge of how to craft XSS payloads that bypass any existing filters
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.112 or later; Liferay DXP 2023.Q4.6 or later, 2023.Q3.9 or later, 7.4 update 93 or later
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62246
Restart Required: No
Instructions:
1. Download the appropriate patch from Liferay's customer portal. 2. Apply the patch following Liferay's patch installation procedures. 3. Verify the fix by testing XSS payloads in affected fields.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize user input in first, middle, and last name fields
Output Encoding
allEnsure all user-controlled data displayed in comments is properly HTML-encoded before rendering
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules
- Disable or restrict comment functionality in affected widgets/apps
🔍 How to Verify
Check if Vulnerable:
Test by entering XSS payloads like <script>alert('XSS')</script> into user name fields and checking if they execute when displayed in commentsCheck Version:
Check Liferay version in Control Panel → Configuration → Server Administration → System InformationVerify Fix Applied:
After patching, test the same XSS payloads to confirm they are properly sanitized and don't execute📡 Detection & Monitoring
Log Indicators:
- Unusual patterns in user name fields containing script tags or JavaScript code
- Multiple failed login attempts followed by comment posting
Network Indicators:
- HTTP requests containing script tags in user name parameters
- Unusual outbound connections from user browsers after viewing comments
SIEM Query:
source="liferay.log" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=") AND ("first_name" OR "last_name" OR "middle_name")