CVE-2025-47056 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier. This vulnerability arises from insufficient input sanitization in certain form fields within AEM, allowing a low-privileged attacker to inject malicious JavaScript code that is stored on the server. When a victim subsequently accesses the affected page containing the vulnerable form field, the malicious script executes in their browser context. This DOM-based XSS (CWE-79) can lead to unauthorized actions such as session hijacking, credential theft, or unauthorized commands executed on behalf of the victim. The vulnerability requires the attacker to have low privileges within the AEM environment and some user interaction (victim browsing the affected page). The CVSS v3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, low privileges required, and user interaction needed. The scope is changed, indicating the vulnerability affects components beyond the initially vulnerable code. No known exploits are reported in the wild yet, and no patches have been linked at the time of publication. Given AEM’s role as a widely used enterprise content management system, exploitation could impact web application integrity and user trust.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager to deliver web content and digital experiences. Successful exploitation could lead to theft of sensitive user data, including session tokens and personal information, potentially violating GDPR requirements on data protection and privacy. The integrity of web content could be compromised, damaging brand reputation and customer trust. Additionally, attackers could leverage the XSS vulnerability as a foothold for further attacks within the corporate network or to spread malware to site visitors. Given the medium severity, the risk is moderate but non-negligible, particularly for sectors with high regulatory scrutiny such as finance, healthcare, and government services. The vulnerability’s requirement for low privileges and user interaction means internal users or authenticated users could be initial vectors, increasing the risk in environments with many internal users or partners accessing AEM-managed portals.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately verify and apply any official patches or updates from Adobe once available, as patching is the most reliable remediation. 2) Implement strict input validation and output encoding on all user-supplied data in AEM forms to prevent script injection, using context-aware encoding libraries. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of any injected code. 4) Conduct thorough security reviews and penetration testing focused on XSS vectors within AEM environments. 5) Limit user privileges in AEM to the minimum necessary, reducing the likelihood of low-privileged attackers exploiting the vulnerability. 6) Monitor web traffic and logs for unusual activity or attempts to inject scripts. 7) Educate users and administrators about the risks of XSS and safe browsing practices. 8) Consider deploying web application firewalls (WAFs) with rules to detect and block XSS payloads targeting AEM. These measures combined will reduce the attack surface and mitigate potential exploitation.