CVE-2025-62265 is a cross-site scripting (XSS) vulnerability identified in the Blogs widget of Liferay Portal versions 7.4.0 through 7.4.3.111 and various Liferay DXP versions including 2023.Q4.0 through 2023.Q4.10, 2023.Q3.1 through 2023.Q3.8, 7.4 GA through update 92, and 7.3 GA through update 36, as well as older unsupported versions. The vulnerability stems from improper neutralization of input during web page generation (CWE-79). Specifically, the Blogs widget allows remote attackers to inject arbitrary web scripts or HTML by embedding a crafted <iframe> element into the blog entry's “Content” text field. The core issue is that the widget does not apply the sandbox attribute to these iframes, which would normally restrict the iframe’s capabilities. Without sandboxing, malicious scripts within the iframe can access and manipulate the parent page’s DOM and execute actions with the privileges of the user viewing the blog entry. This can lead to session hijacking, theft of sensitive information, or redirection to malicious websites. The vulnerability can be exploited remotely without authentication but requires user interaction to trigger the malicious payload. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required, but user interaction is necessary. The impact on confidentiality and integrity is low to limited, with no direct impact on availability. No known exploits have been reported in the wild as of the publication date. The vulnerability affects a widely used enterprise portal platform, often deployed in corporate intranets and public-facing websites, making it a relevant concern for organizations relying on Liferay for content management and collaboration.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of user sessions and data accessed via Liferay Portal blogs. Attackers exploiting this flaw could hijack user sessions, steal authentication tokens, or inject malicious content leading to phishing or malware distribution. Organizations using Liferay for internal collaboration or customer-facing portals could suffer reputational damage, data breaches, or compliance violations under GDPR if personal data is compromised. The impact is heightened in sectors with sensitive information such as finance, healthcare, and government services. Since exploitation requires user interaction, social engineering or phishing campaigns could be used to lure users into triggering the malicious iframe content. The lack of sandboxing increases the attack surface by allowing iframe scripts to break out of their containment, potentially enabling more sophisticated attacks. Although the CVSS score is medium, the widespread use of Liferay in Europe and the criticality of affected systems mean that the practical impact could be significant if exploited at scale.

1. Apply official patches or updates from Liferay as soon as they become available to address this vulnerability directly. 2. Implement strict input validation and sanitization on blog content fields to prevent injection of malicious iframes or scripts. 3. Configure the Blogs widget or underlying platform to enforce the sandbox attribute on all iframe elements, restricting their capabilities and preventing access to the parent page. 4. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and limit iframe sources. 5. Conduct regular security reviews and penetration testing focusing on user-generated content components. 6. Educate users about the risks of interacting with untrusted or suspicious blog content to reduce the likelihood of successful exploitation. 7. Monitor web logs and user activity for signs of attempted XSS attacks or unusual iframe injections. 8. Consider deploying web application firewalls (WAF) with rules tailored to detect and block malicious iframe injections targeting Liferay portals. 9. For organizations unable to immediately patch, disable or restrict the Blogs widget functionality temporarily to reduce exposure. 10. Maintain an inventory of Liferay versions deployed across the organization to prioritize remediation efforts effectively.