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How the Mentioned CVE Works
The vulnerability CVE-2025-43787 is a stored cross-site scripting (XSS) flaw in Liferay Portal and Liferay DXP. It originates from improper neutralization of user-controlled input. An attacker with authenticated access to the portal can inject malicious JavaScript code into the “organization site names” field. This input is not properly sanitized or escaped by the application. The malicious payload is then persistently stored on the server. When other users, such as administrators or members of the organization, later view a page that displays the compromised site name, the stored script is automatically retrieved and executed in their browser. This attack does not require the victim to click a malicious link; the exploitation occurs simply by viewing a legitimate page within the portal. The vulnerability has a CVSS 4.0 Base Score of 5.1 (MEDIUM), with the attack vector being network-based, requiring low attack complexity and low privileges, but needing user interaction to succeed.
DailyCVE Form
Platform: Liferay Portal/DXP
Version: 7.4.0-7.4.3.132
Vulnerability: Stored XSS
Severity: MEDIUM
date: 2025-09-12
Prediction: Patched 2025-09-12
What Undercode Say:
Check Liferay version find /path/to/liferay -name ".properties" | xargs grep "liferay.version" Search for potentially risky output in JSPs related to site names grep -r "organization.site.name|<%=.siteName.%>" /path/to/liferay/templates/ Simple curl to test for basic reflection (though this is stored) curl -s "http://target:8080" | grep -i "script"
How Exploit:
An authenticated attacker navigates to the organization management section. They edit an organization’s site name, inputting a payload like <script>alert('XSS')</script>. After saving, the payload is stored in the database. Any user who views a page displaying that organization’s name will have the script execute in their session.
Protection from this CVE
Apply the official fixes. For Liferay DXP, upgrade to fixed versions 2024.Q1.21 or 2025.Q3.1. For Liferay Portal, apply the fix from the master branch. Implement strict output encoding for all user-controlled data displayed in web views.
Impact
Successful exploitation compromises data integrity and confidentiality. Attackers can steal session cookies, redirect users to malicious sites, or perform actions on behalf of the victim user within their permission scope. The impact is limited to the application context and does not affect system availability.
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Sources:
Reported By: nvd.nist.gov
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