CVE-2025-62238 is a stored cross-site scripting (XSS) vulnerability categorized under CWE-79, found in Liferay Portal versions 7.4.3.21 through 7.4.3.111 and Liferay DXP versions 2023.Q4.0 through 2023.Q4.5, 2023.Q3.1 through 2023.Q3.8, and 7.4 update 21 through update 92. The flaw exists on the Membership page within the Account Settings, specifically in the handling of the 'Name' text field of an account. An authenticated attacker can inject malicious JavaScript or HTML payloads into this field, which are then stored and rendered to other users or the same user upon viewing the page. This improper neutralization of input during web page generation can lead to execution of arbitrary scripts in the context of the victim’s browser, potentially enabling session hijacking, credential theft, or unauthorized actions. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L, meaning limited privileges but some authentication), user interaction required (UI:A), low confidentiality and integrity impact (VC:L, VI:L), and no availability impact (VA:N). No public exploits are currently known, but the vulnerability's presence in widely used enterprise portal software makes it a moderate risk. The vulnerability stems from insufficient input validation and output encoding on user-supplied data fields, a common vector for stored XSS attacks. Given the portal’s role in enterprise environments, exploitation could facilitate lateral movement or data exfiltration within affected organizations.

For European organizations, this vulnerability poses a moderate risk primarily to confidentiality and integrity of user sessions and data. Liferay Portal is widely used in enterprise and government sectors across Europe for intranet, extranet, and public-facing web portals. Successful exploitation could allow attackers to hijack user sessions, steal sensitive information, or perform unauthorized actions under the victim’s identity. This is particularly concerning for organizations handling personal data under GDPR, as exploitation could lead to data breaches and regulatory penalties. The requirement for authentication limits the attack surface but does not eliminate risk, especially in environments with many users or weak access controls. The vulnerability could also be leveraged as a foothold for further attacks within the network. While availability impact is negligible, the reputational damage and operational disruption from defacement or data compromise could be significant. Organizations relying on Liferay for critical services or public portals are at higher risk of targeted exploitation.

1. Apply vendor patches or updates as soon as they become available to address the vulnerability directly. 2. Implement strict input validation and output encoding on all user-supplied data fields, especially the 'Name' field in Account Settings, to neutralize malicious scripts. 3. Restrict user privileges to the minimum necessary, limiting who can modify account details to reduce the risk of malicious payload injection. 4. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5. Conduct regular security audits and penetration testing focused on web application input handling. 6. Monitor logs and user activity for unusual behavior indicative of exploitation attempts. 7. Educate users about phishing and social engineering risks that could facilitate exploitation. 8. Consider deploying web application firewalls (WAF) with rules tailored to detect and block XSS payloads targeting Liferay portals. 9. Isolate critical Liferay instances behind additional authentication layers or network segmentation to reduce exposure. 10. Maintain an incident response plan to quickly address any detected exploitation.