CVE-2025-43783
📋 TL;DR
This reflected cross-site scripting (XSS) vulnerability in Liferay Portal/DXP allows remote attackers to inject malicious scripts or HTML via the /c/portal/comment/discussion/get_editor path. When exploited, it can enable session hijacking, credential theft, or content manipulation. Organizations running affected Liferay versions are vulnerable.
💻 Affected Systems
- Liferay Portal
- Liferay DXP
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator credentials, take over administrative accounts, and compromise the entire Liferay instance and connected systems.
Likely Case
Attackers steal user session cookies, perform actions as authenticated users, and potentially access sensitive data.
If Mitigated
Script execution is blocked by Content Security Policy (CSP) or input validation, limiting impact to minor UI disruption.
🎯 Exploit Status
Reflected XSS typically requires user interaction (clicking malicious link) but is straightforward to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Liferay Portal 7.4.3.129+, Liferay DXP 2024.Q3.2+, 2024.Q2.14+, 2024.Q1.13+, 7.4 update 93+
Vendor Advisory: https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43783
Restart Required: No
Instructions:
1. Download the appropriate fix pack from Liferay Customer Portal. 2. Apply the fix pack following Liferay's patch deployment procedures. 3. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Implement Content Security Policy (CSP)
allAdd CSP headers to block inline script execution and restrict script sources.
Add to web.xml or server configuration: Content-Security-Policy: script-src 'self'
Web Application Firewall (WAF) Rules
allConfigure WAF to block requests containing script patterns in the /c/portal/comment/discussion/get_editor path.
🧯 If You Can't Patch
- Implement strict input validation and output encoding for the affected endpoint.
- Disable or restrict access to the /c/portal/comment/discussion/get_editor path if not required.
🔍 How to Verify
Check if Vulnerable:
Test by accessing https://[liferay-host]/c/portal/comment/discussion/get_editor?test=<script>alert('xss')</script> and checking if script executes.Check Version:
Check Liferay Control Panel → Configuration → Server Administration → System Information for version details.Verify Fix Applied:
After patching, repeat the test above; script execution should be blocked or properly encoded.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /c/portal/comment/discussion/get_editor containing script tags or suspicious parameters
- Unusual parameter values in access logs
Network Indicators:
- HTTP requests with script payloads in query parameters
- Traffic patterns showing repeated access to the vulnerable endpoint
SIEM Query:
source="liferay_access.log" AND uri_path="/c/portal/comment/discussion/get_editor" AND (query="*<script>*" OR query="*javascript:*")