CVE-2025-46931 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 malicious payload, the injected 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 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 to trigger the script execution. The scope is changed (S:C), indicating the vulnerability affects resources beyond the initially vulnerable component, with limited impact on confidentiality and integrity but no impact on availability. No known exploits have been reported in the wild yet, and no patches have been linked at the time of publication. Stored XSS vulnerabilities in AEM are particularly concerning because AEM is widely used for managing enterprise web content, and successful exploitation can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim user within the affected web application context.

For European organizations using Adobe Experience Manager, this vulnerability poses a significant risk to the confidentiality and integrity of web application users' data. Attackers exploiting this flaw could execute arbitrary scripts in the browsers of employees, customers, or partners, potentially leading to theft of authentication tokens, personal data, or manipulation of web content. This could result in reputational damage, regulatory non-compliance (e.g., GDPR violations due to data leakage), and financial losses. Since AEM is often used by public sector entities, financial institutions, and large enterprises across Europe, the impact could be widespread. The requirement for low privileges to inject the malicious script increases the attack surface, especially in environments where multiple users have access to content management interfaces. The need for user interaction (visiting the compromised page) means social engineering or phishing could be used to increase exploitation success. Although no active exploits are known yet, the medium severity score and the critical role of AEM in digital presence make timely mitigation essential to prevent potential targeted attacks.

European organizations should immediately audit their Adobe Experience Manager installations to identify affected versions (6.5.22 and earlier). Since no official patches are linked yet, organizations should implement compensating controls such as: 1) Applying strict input validation and output encoding on all user-supplied data in AEM forms to prevent script injection. 2) Employing Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting AEM endpoints. 3) Restricting access to content management interfaces to trusted users only and enforcing the principle of least privilege. 4) Conducting user awareness training to reduce the risk of users clicking on malicious links or visiting compromised pages. 5) Monitoring web logs and user activity for unusual behavior indicative of exploitation attempts. 6) Preparing to apply Adobe's official patches or updates as soon as they become available. Additionally, organizations should review their Content Security Policy (CSP) configurations to limit the impact of any injected scripts.