CVE-2025-62260
📋 TL;DR
This vulnerability allows remote attackers to perform denial-of-service attacks against Liferay Portal/DXP by sending Headless API requests that return excessive numbers of objects, overwhelming server resources. Affected systems include Liferay Portal 7.4.0-7.4.3.99 and Liferay DXP 2023.Q3.1-2023.Q3.4, 7.4 GA-update 92, 7.3 GA-update 35, and older unsupported versions.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete application unavailability due to resource exhaustion, affecting all users and potentially requiring server restart.
Likely Case
Degraded performance and intermittent service disruptions for legitimate users.
If Mitigated
Minimal impact with proper rate limiting and resource monitoring in place.
🎯 Exploit Status
Simple HTTP requests to Headless API endpoints can trigger the vulnerability; no authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.100+, Liferay DXP 2023.Q3.5+, 7.4 update 93+, 7.3 update 36+
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-62260
Restart Required: Yes
Instructions:
1. Download appropriate patch from Liferay Customer Portal. 2. Apply patch following Liferay's patching procedures. 3. Restart Liferay instance. 4. Verify fix by testing Headless API endpoints.
🔧 Temporary Workarounds
API Rate Limiting
allImplement rate limiting on Headless API endpoints using web application firewall or reverse proxy.
# Example nginx rate limiting
limit_req_zone $binary_remote_addr zone=api:10m rate=10r/s;
limit_req zone=api burst=20 nodelay;
Request Size Limiting
allConfigure maximum response size limits for API endpoints.
# Apache mod_security rule
SecRule RESPONSE_BODY "@gt 10000000" "id:1001,phase:4,deny"
🧯 If You Can't Patch
- Implement strict rate limiting and request throttling on Headless API endpoints
- Monitor server resource usage and set alerts for abnormal API request patterns
🔍 How to Verify
Check if Vulnerable:
Test Headless API endpoints with requests that should return large datasets; monitor server resource consumption.Check Version:
Check Liferay version via Control Panel → Configuration → Server Administration → System InformationVerify Fix Applied:
After patching, test same API endpoints and verify response limits are enforced and resource usage remains normal.📡 Detection & Monitoring
Log Indicators:
- High frequency of Headless API requests
- Unusually large response sizes in access logs
- Increased memory/CPU usage correlated with API requests
Network Indicators:
- Bursts of requests to /o/api/* endpoints
- Large HTTP responses from API endpoints
SIEM Query:
source="liferay.logs" AND (uri_path="/o/api/*" AND response_size>1000000) | stats count by src_ip