CVE-2025-62263 is a cross-site scripting (XSS) vulnerability classified under CWE-79, affecting Liferay Portal versions 7.3.7 through 7.4.3.103 and Liferay DXP versions 2023.Q3.1 through 2023.Q3.4, including 7.4 GA through update 92 and 7.3 service pack 3 through update 36. The vulnerability arises from improper neutralization of input during web page generation, specifically in the handling of user-supplied data in the 'Title' field of Account Roles and the 'Name' field of Organizations. Attackers can craft malicious payloads injected into these fields, which are then rendered unsanitized on various pages such as the account role page, select account role page, account page, account organization page, and select account organization page. This allows remote attackers to execute arbitrary scripts in the context of the victim's browser when they view or interact with these pages. The vulnerability does not require authentication but does require user interaction (UI:A). The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), user interaction required (UI:A), and low impact on confidentiality and integrity (VC:L, VI:L) with no impact on availability. No known exploits have been reported in the wild as of the publication date. The flaw can be leveraged for session hijacking, phishing, or other malicious activities that exploit script execution in trusted contexts. The vulnerability affects enterprise deployments of Liferay Portal, which is widely used for web content management and collaboration platforms.

For European organizations, the impact of CVE-2025-62263 includes potential compromise of user sessions, unauthorized actions performed on behalf of users, and exposure to phishing or malware delivery through injected scripts. Organizations relying on Liferay Portal for internal or external web services may face data confidentiality breaches and integrity violations. The vulnerability could be exploited to target employees or customers, leading to reputational damage and regulatory compliance issues, especially under GDPR. Since Liferay is used in sectors such as government, finance, and healthcare across Europe, exploitation could disrupt critical services or lead to data leakage. The requirement for user interaction limits automated exploitation but does not eliminate risk, particularly in environments with high user engagement. The absence of known exploits reduces immediate threat but does not preclude future attacks. Overall, the vulnerability poses a moderate risk that could escalate if combined with social engineering or other attack vectors.

European organizations should immediately assess their Liferay Portal and DXP deployments to identify affected versions. Applying vendor patches or updates as soon as they become available is critical. In the absence of patches, organizations should implement strict input validation and output encoding on the affected fields ('Title' and 'Name') to prevent script injection. Employing Content Security Policy (CSP) headers can help mitigate the impact of injected scripts by restricting script execution sources. Additionally, user awareness training to recognize suspicious content and cautious handling of links or inputs related to Liferay portals can reduce successful exploitation. Monitoring web application logs for unusual input patterns or errors related to these fields can aid in early detection. Restricting access to sensitive Liferay pages and enforcing least privilege principles for users interacting with account roles and organizations can further reduce risk. Finally, integrating web application firewalls (WAFs) with custom rules targeting known XSS payloads may provide an additional protective layer.