CVE-2025-43747 is a Server-Side Request Forgery (SSRF) vulnerability identified in Liferay DXP versions 2025.Q2.0 through 2025.Q2.3. The root cause of this vulnerability lies in insecure domain validation implemented on the configuration parameter analytics.cloud.domain.allowed. This parameter is intended to restrict outbound requests to trusted domains for analytics purposes. However, the validation mechanism fails to properly distinguish between legitimate trusted subdomains and maliciously crafted domains controlled by an attacker. As a result, an attacker can manipulate the domain value to bypass the validation checks and induce the server to make arbitrary HTTP requests to internal or external systems. SSRF vulnerabilities like this can be exploited to access internal resources that are otherwise inaccessible from the outside, potentially leading to information disclosure, internal network reconnaissance, or further exploitation of internal services. The CVSS v4.0 base score is 4.8, indicating a medium severity level. The vector indicates network attack vector, low attack complexity, no privileges required but user interaction is needed, and low confidentiality and integrity impact with no availability impact. No known exploits are currently reported in the wild, and no patches have been published yet. Given the nature of Liferay DXP as a widely used enterprise portal and digital experience platform, this vulnerability could be leveraged by attackers to pivot into internal networks or exfiltrate sensitive data if exploited successfully.

For European organizations, the impact of this SSRF vulnerability can be significant, especially for enterprises relying on Liferay DXP for internal portals, customer-facing applications, or analytics services. Exploitation could allow attackers to bypass perimeter defenses and access internal systems, potentially exposing sensitive business data or user information protected under GDPR. This could lead to regulatory fines, reputational damage, and operational disruption. Additionally, SSRF can be a stepping stone for more advanced attacks such as lateral movement within corporate networks or accessing cloud metadata services if Liferay is deployed in cloud environments. Organizations in sectors with high compliance requirements such as finance, healthcare, and government are particularly at risk. The medium CVSS score suggests moderate risk, but the actual impact depends on the deployment context and network segmentation. Since user interaction is required, phishing or social engineering could be used to trigger the vulnerability, increasing the attack surface.

To mitigate this vulnerability, European organizations should first monitor for any updates or patches released by Liferay and apply them promptly once available. In the interim, administrators should review and tighten the analytics.cloud.domain.allowed configuration to explicitly whitelist only fully qualified, verified trusted domains and subdomains, avoiding wildcard or overly permissive entries. Implement network-level controls such as egress filtering and web application firewalls (WAFs) to restrict outbound HTTP requests from the Liferay server to only necessary destinations. Conduct thorough logging and monitoring of outbound requests to detect anomalous or unexpected connections. Additionally, organizations should educate users about the risks of social engineering that could trigger SSRF exploitation and enforce strict access controls on the Liferay administrative interface to reduce the risk of unauthorized configuration changes. Finally, consider isolating Liferay servers in segmented network zones with limited access to sensitive internal resources to contain potential SSRF exploitation.