CVE-2025-62276
📋 TL;DR
This vulnerability allows local users to access downloaded files via browser cache due to incorrect cache-control headers in Liferay's Document Library and Adaptive Media modules. It affects Liferay Portal 7.4.0-7.4.3.111 and Liferay DXP 2023.Q4.0-2023.Q4.10, 2023.Q3.1-2023.Q3.10, and 7.4 GA-update 92. Attackers must have local access to the user's browser.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local attackers could access sensitive documents cached in browsers, potentially exposing confidential business data or personal information.
Likely Case
Users sharing computers or public workstations could inadvertently expose cached documents to subsequent users.
If Mitigated
With proper browser security settings and cache management, exposure is limited to low-sensitivity documents.
🎯 Exploit Status
Exploitation requires local access to browser cache. No authentication bypass needed beyond physical/network access to the browser.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.112+, Liferay DXP 2023.Q4.11+, 2023.Q3.11+, 7.4 update 93+
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62276
Restart Required: Yes
Instructions:
1. Download appropriate patch from Liferay Customer Portal. 2. Apply patch following Liferay's patching guide. 3. Restart Liferay instance. 4. Verify cache-control headers are properly set.
🔧 Temporary Workarounds
Configure browser cache settings
allConfigure browsers to clear cache on exit or disable caching for Liferay sites
Browser-specific settings (e.g., Chrome: Settings > Privacy and security > Clear browsing data > Cached images and files)
Implement HTTP header security
linuxUse web application firewall or reverse proxy to add proper cache-control headers
nginx: add_header Cache-Control "no-store, no-cache, must-revalidate, max-age=0";
Apache: Header set Cache-Control "no-store, no-cache, must-revalidate, max-age=0"
🧯 If You Can't Patch
- Implement strict browser policies to clear cache automatically on shared systems
- Disable Document Library and Adaptive Media modules if not essential
🔍 How to Verify
Check if Vulnerable:
Check Liferay version via Control Panel > Configuration > Server Administration > System Information, then compare to affected versionsCheck Version:
Check liferay-portal.xml or via Control Panel interfaceVerify Fix Applied:
1. Verify version is patched. 2. Test file downloads and inspect HTTP response headers for proper Cache-Control: no-store, no-cache headers📡 Detection & Monitoring
Log Indicators:
- Multiple file downloads from same IP/user in short timeframe
- Unusual access patterns to document library
Network Indicators:
- HTTP responses missing proper cache-control headers for document/media downloads
SIEM Query:
source="liferay" AND (event="FILE_DOWNLOAD" OR uri="/documents/") | stats count by src_ip, user