CVE-2025-46860 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 persistently stored on the server. When a victim user accesses the affected page containing the injected script, the malicious code 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 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 necessary to trigger the payload. The vulnerability impacts confidentiality and integrity by enabling script execution that could steal session tokens, perform actions on behalf of the user, or manipulate displayed content. Availability is not directly affected. The scope is changed (S:C), indicating the vulnerability affects resources beyond the initially vulnerable component. No known exploits are reported in the wild yet, and no patches are linked at the time of publication. Given AEM's role as a content management system widely used for enterprise web portals, this vulnerability can be leveraged for targeted attacks, including credential theft, session hijacking, or delivering further malware.

For European organizations, this vulnerability poses a significant risk especially to enterprises relying on Adobe Experience Manager for their public-facing websites, intranets, or customer portals. Exploitation could lead to unauthorized access to sensitive user data, compromise of user accounts, and erosion of trust due to defacement or malicious content injection. Industries such as finance, government, healthcare, and e-commerce, which often use AEM for digital experience management, could face reputational damage and regulatory scrutiny under GDPR if personal data is exposed. The medium severity score reflects that while the vulnerability requires some user interaction and low privileges, the potential for lateral movement and data theft exists. Additionally, the scope change indicates that the impact could extend beyond the vulnerable component, possibly affecting other integrated systems or services. The lack of known exploits currently provides a window for proactive mitigation, but the widespread deployment of AEM in Europe increases the attack surface and potential impact.

European organizations should immediately audit their Adobe Experience Manager installations to identify affected versions (6.5.22 and earlier). Until an official patch is released, implement strict input validation and output encoding on all user-supplied data within AEM forms to prevent script injection. Employ Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting AEM endpoints. Conduct thorough security testing, including automated and manual penetration testing focused on stored XSS vectors. Educate users about the risks of clicking suspicious links or interacting with untrusted content on corporate portals. Monitor logs for unusual activity or repeated attempts to inject scripts. Plan and prioritize patch deployment as soon as Adobe releases an update. Additionally, consider implementing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM-managed sites, thereby mitigating the impact of potential XSS payloads.