CVE-2025-46953 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, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When a victim user accesses a page containing the compromised form field, the malicious script executes in their browser context. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. The CVSS v3.1 base score is 5.4 (medium severity), with the vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, meaning the attack can be launched remotely over the network with low attack complexity, requires low privileges, and user interaction is needed (victim must visit the affected page). The scope is changed, indicating that the vulnerability affects resources beyond the initially vulnerable component, potentially impacting other components or users. Exploitation could lead to partial confidentiality and integrity impacts, such as theft of session cookies, user impersonation, or unauthorized actions performed on behalf of the victim. No known exploits in the wild have been reported yet, and no patches are currently linked, suggesting organizations should prioritize monitoring and mitigation. Adobe Experience Manager is a widely used enterprise content management system, often deployed in large organizations for managing digital assets and websites, making this vulnerability significant in environments where AEM is in use.

For European organizations, the impact of this vulnerability can be considerable, especially for those relying on Adobe Experience Manager to manage public-facing or internal web portals. Successful exploitation could allow attackers to execute arbitrary scripts in the browsers of employees, customers, or partners, potentially leading to credential theft, session hijacking, or unauthorized actions within the affected web applications. This could result in data breaches, reputational damage, and compliance violations under regulations such as GDPR. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, the risk extends to sensitive and critical sectors. The changed scope of the vulnerability suggests that the impact could propagate beyond the initial vulnerable component, increasing the risk of widespread compromise within the affected web infrastructure. Although no active exploits are known, the medium severity score and ease of exploitation with low privileges mean that attackers could develop exploits relatively easily once the vulnerability details are widely known.

European organizations should immediately identify all instances of Adobe Experience Manager 6.5.22 or earlier in their environment. Until an official patch is released, organizations should implement strict input validation and output encoding on all user-supplied data in AEM forms to prevent script injection. Web Application Firewalls (WAFs) should be configured to detect and block common XSS payloads targeting AEM. Additionally, organizations should enforce Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. Regular security audits and penetration testing focused on AEM deployments can help detect exploitation attempts. User awareness training should emphasize the risks of clicking on suspicious links or interacting with untrusted content. Monitoring web server logs and user activity for unusual behavior can aid in early detection of exploitation. Once Adobe releases an official patch, organizations must prioritize timely deployment to fully remediate the vulnerability.