CVE-2025-43823 is a cross-site scripting (XSS) vulnerability classified under CWE-79, found in the Commerce Search Result widget of Liferay Portal versions 7.4.0 through 7.4.3.111 and Liferay DXP 2023.Q4 before patch 6, 2023.Q3 before patch 9, and 7.4 GA through update 92. The vulnerability arises due to improper neutralization of input during web page generation, specifically in the handling of the Commerce Product's Name text field. An attacker can craft a malicious payload and inject arbitrary HTML or JavaScript code into this field, which is then rendered unsanitized in the widget output. This flaw allows remote attackers to execute scripts in the context of users viewing the affected widget, potentially leading to session hijacking, credential theft, or unauthorized actions on behalf of the victim. The CVSS 4.0 base score is 4.8 (medium), reflecting that the attack vector is network-based with low attack complexity and no privileges required, but user interaction is necessary to trigger the payload. The vulnerability does not affect confidentiality or availability directly but impacts integrity and user trust. No public exploits or active exploitation have been reported to date. The vendor has not provided patch links in the provided data, so organizations must monitor official Liferay advisories for updates. This vulnerability highlights the importance of proper input validation and output encoding in web applications, especially in e-commerce components where user-generated content is common.

For European organizations, this vulnerability poses a moderate risk primarily to web applications using affected Liferay Portal versions, especially those leveraging the Commerce Search Result widget. Exploitation could lead to theft of session cookies, enabling attackers to impersonate legitimate users and access sensitive data or perform unauthorized transactions. This risk is heightened in sectors such as finance, retail, and government, where Liferay is often deployed for customer portals and intranet services. The impact on confidentiality and integrity could be significant if attackers leverage the XSS to escalate privileges or conduct phishing campaigns. While availability is not directly affected, reputational damage and loss of user trust could result from successful attacks. The requirement for user interaction limits automated exploitation but does not eliminate risk, as social engineering can be used to lure users into triggering the malicious payload. Organizations failing to patch or implement mitigations may face compliance issues under GDPR if personal data is compromised through this vulnerability.

European organizations should immediately identify all instances of Liferay Portal and DXP deployments running affected versions. Since no patch links are provided, organizations must monitor Liferay's official security advisories and apply patches as soon as they become available. In the interim, implement strict input validation and output encoding on the Commerce Product Name field to neutralize potentially malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Conduct thorough code reviews and penetration testing focused on XSS vectors within the Commerce Search Result widget. Educate users about the risks of clicking on suspicious links or interacting with untrusted content. Additionally, consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting Liferay components. Regularly audit logs for unusual activity that may indicate attempted exploitation. Finally, ensure that incident response plans include procedures for handling XSS incidents to minimize damage.