CVE-2025-46891 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. This can lead to unauthorized actions such as session hijacking, credential theft, or performing actions on behalf of the victim user. 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), reflecting that the attack vector is network-based (AV:N), requires low privileges (PR:L), and user interaction (UI:R) is necessary for exploitation. The scope is changed (S:C), meaning the vulnerability affects components beyond the initially vulnerable component, and the impact is limited to confidentiality and integrity (C:L/I:L), with no impact on availability (A:N). No known exploits are currently in the wild, and no patches have been linked yet. The vulnerability was published on June 10, 2025, with the reservation date of April 30, 2025. Given the widespread use of Adobe Experience Manager in enterprise content management and digital experience platforms, this vulnerability poses a significant risk if exploited, especially in environments where users have elevated privileges or access sensitive information through AEM portals.

For European organizations, the impact of this vulnerability can be substantial, particularly for those relying on Adobe Experience Manager for managing web content, customer portals, or intranet sites. Exploitation could lead to unauthorized disclosure of sensitive information, including user credentials or personal data, potentially violating GDPR requirements. The injected scripts could also be used to perform actions on behalf of authenticated users, leading to data integrity issues or unauthorized transactions. Since many European enterprises and public sector organizations use AEM for digital services, the risk extends to critical infrastructure and services. Additionally, reputational damage and regulatory penalties could arise if customer data is compromised. The medium severity score indicates that while the vulnerability is not trivially exploitable without user interaction, the potential for targeted phishing or social engineering attacks to trigger the exploit exists, increasing risk in environments with high user interaction.

1. Immediate mitigation should include disabling or restricting access to vulnerable form fields in Adobe Experience Manager until a patch is available. 2. Implement strict input validation and output encoding on all user-supplied data within AEM to prevent script injection. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM content. 4. Conduct thorough security reviews and penetration testing focused on XSS vulnerabilities in all AEM deployments. 5. Educate users about the risks of clicking on suspicious links or interacting with untrusted content within AEM portals. 6. Monitor web server and application logs for unusual activities or repeated attempts to inject scripts. 7. Once Adobe releases an official patch, prioritize its deployment across all affected systems. 8. Consider implementing web application firewalls (WAF) with rules specifically designed to detect and block XSS payloads targeting AEM. 9. Review and limit user privileges within AEM to minimize the impact of low-privilege attackers.