CVE-2022-30682 is a reflected Cross-Site Scripting (XSS) vulnerability affecting Adobe Experience Manager (AEM) versions up to and including 6.5.13.0. This vulnerability arises when an attacker crafts a malicious URL referencing a vulnerable page within AEM, which, when visited by a victim, causes the victim's browser to execute attacker-controlled JavaScript code in the context of the affected web application. The vulnerability is classified under CWE-79, indicating improper neutralization of input during web page generation. Exploitation requires the attacker to have low-privilege access to the AEM instance, meaning the attacker must be able to interact with the system in some limited capacity but does not require administrative privileges. The reflected nature of the XSS means the malicious script is not stored persistently but delivered via crafted URLs. There are no known exploits in the wild as of the publication date, and no official patches have been linked in the provided data. The vulnerability can lead to session hijacking, unauthorized actions on behalf of the victim, or redirection to malicious sites, depending on the attacker's payload. Given that AEM is a widely used enterprise content management system, this vulnerability could be leveraged to target users interacting with affected AEM-powered websites or portals.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Adobe Experience Manager for content delivery, customer portals, or internal web applications. Successful exploitation could compromise user sessions, leading to unauthorized access to sensitive information or manipulation of user interactions. This can damage organizational reputation, lead to data breaches, and potentially violate GDPR requirements concerning data protection and breach notification. Since AEM is often used by large enterprises, public sector bodies, and media companies in Europe, the risk extends to critical infrastructure and services. The reflected XSS could also be used as a vector for phishing attacks targeting employees or customers, increasing the risk of credential theft or malware deployment. Although exploitation requires some level of access, the low privilege requirement lowers the barrier for attackers who may have obtained limited credentials or access through other means.

1. Immediate mitigation should include implementing strict input validation and output encoding on all user-controllable inputs within AEM pages to neutralize malicious scripts. 2. Organizations should review and restrict access controls to AEM instances, ensuring that only trusted users have any level of access, minimizing the risk of attackers gaining the low-privilege access needed for exploitation. 3. Deploy Web Application Firewalls (WAFs) with rules tailored to detect and block reflected XSS payloads targeting AEM-specific URL patterns. 4. Conduct thorough security audits and penetration testing focused on AEM deployments to identify and remediate similar injection points. 5. Monitor web traffic and logs for unusual URL patterns or repeated attempts to exploit reflected XSS vulnerabilities. 6. Stay updated with Adobe security advisories and apply patches promptly once available. 7. Educate users and administrators about the risks of clicking on suspicious links, especially those referencing internal AEM pages. 8. Consider implementing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM content.