CVE-2025-52629 identifies a security weakness in HCL AION version 2.0 related to the absence of a Content-Security-Policy (CSP) header, classified under CWE-1032 (Missing Content Security Policy). CSP is a critical HTTP response header that helps prevent cross-site scripting (XSS), clickjacking, and other code injection attacks by specifying which dynamic resources are allowed to load and execute in the browser. Without a CSP, malicious actors can exploit vulnerabilities in web applications to inject and execute unauthorized scripts, potentially leading to data theft, session hijacking, or defacement. The CVSS 3.1 vector (AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L) indicates the attack is network-based but requires high attack complexity, low privileges, and user interaction, with limited confidentiality impact and no integrity or availability impact. No patches or exploits are currently known, but the absence of CSP represents a security best practice gap that could be leveraged in combination with other vulnerabilities. This issue affects only version 2.0 of HCL AION, a platform used for enterprise application development and integration. Remediation involves configuring appropriate CSP headers to restrict resource loading and script execution to trusted sources, thereby reducing the attack surface for XSS and related attacks.

For European organizations, the absence of a CSP header in HCL AION 2.0 applications increases the risk of client-side attacks such as cross-site scripting and content injection. While the direct impact on confidentiality is low and no integrity or availability loss is expected, successful exploitation could lead to session hijacking, unauthorized actions on behalf of users, or exposure of sensitive information through injected scripts. This can undermine user trust and potentially violate data protection regulations like GDPR if personal data is compromised. Organizations relying on HCL AION for critical business processes or customer-facing portals may face reputational damage and operational disruptions if attackers exploit this weakness in conjunction with other vulnerabilities. The low CVSS score and lack of known exploits suggest limited immediate threat, but the vulnerability weakens overall security posture and should be addressed proactively.

European organizations using HCL AION 2.0 should implement a robust Content-Security-Policy header tailored to their application needs. This includes specifying allowed sources for scripts, styles, images, and other resources, and enabling directives such as 'default-src', 'script-src', and 'object-src' to restrict resource loading. Additionally, organizations should: 1) Conduct thorough security testing to identify any existing XSS or injection vulnerabilities that could be exploited without CSP. 2) Employ security headers like X-Content-Type-Options, X-Frame-Options, and Referrer-Policy to complement CSP. 3) Regularly update and patch HCL AION and related components as new versions become available. 4) Educate developers on secure coding practices and the importance of CSP. 5) Monitor web application traffic for suspicious activity indicative of injection attempts. Since no patch is currently available, configuration changes at the web server or application level are the primary mitigation. Integrating CSP into the security architecture will significantly reduce the risk of exploitation.