CVE-2025-46934 is a stored Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions 6.5.22 and earlier. This vulnerability allows a low-privileged attacker to inject malicious JavaScript code into vulnerable form fields within the AEM environment. When a victim subsequently accesses the affected page containing the injected script, the malicious code executes in their browser context. Stored XSS vulnerabilities are particularly dangerous because the malicious payload is saved on the server and served to multiple users, increasing the attack surface and potential impact. The vulnerability requires the attacker to have some level of access to submit data to the vulnerable form fields (privileged but low-level), and user interaction is necessary for exploitation, as the victim must visit the compromised page. The CVSS 3.1 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 (S:C), meaning the vulnerability can affect resources beyond the vulnerable component. The impact affects confidentiality and integrity but not availability, as malicious scripts can steal session tokens, perform actions on behalf of users, or manipulate displayed content. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that organizations should prioritize monitoring and mitigation efforts proactively. Given AEM's role as a content management system widely used for web content delivery, exploitation could lead to significant reputational damage and data leakage if customer or internal user data is exposed via the injected scripts.

For European organizations, the impact of this vulnerability can be significant, especially for enterprises relying on Adobe Experience Manager to manage public-facing websites or internal portals. Exploitation could lead to theft of user credentials, session hijacking, and unauthorized actions performed in the context of authenticated users, potentially exposing sensitive business or personal data. This can result in regulatory non-compliance under GDPR due to data breaches involving personal data. Additionally, the injection of malicious scripts can damage brand reputation and erode customer trust. Since AEM is often used by government agencies, financial institutions, and large enterprises in Europe, the risk extends to critical sectors where data integrity and confidentiality are paramount. The medium severity rating suggests that while the vulnerability is not trivial, it requires some user interaction and privileges, which somewhat limits the attacker's capabilities but does not eliminate the risk. The absence of known exploits in the wild provides a window for European organizations to remediate before active exploitation occurs.

1. Immediate mitigation should include reviewing and restricting access permissions to AEM form fields to minimize the ability of low-privileged users to submit potentially malicious input. 2. Implement strict input validation and output encoding on all form fields to prevent injection of executable scripts. 3. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4. Monitor web application logs for unusual input patterns or repeated form submissions that could indicate attempted exploitation. 5. Segregate AEM environments and limit administrative access to reduce the attack surface. 6. Stay updated with Adobe security advisories and apply patches promptly once available. 7. Conduct regular security assessments and penetration testing focused on XSS vulnerabilities in AEM deployments. 8. Educate users and administrators about the risks of XSS and encourage reporting of suspicious website behavior. These measures go beyond generic advice by focusing on access control, input sanitization, and proactive monitoring tailored to the AEM environment.