CVE-2025-46862 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 interface. When a victim user visits a page containing the compromised form field, the malicious script executes in their browser context. The attack exploits improper input sanitization or output encoding in the affected form fields, enabling persistent script injection that can impact multiple users. The vulnerability requires the attacker to have some level of authenticated access (low privilege) and user interaction (victim browsing the affected page) to trigger the exploit. The CVSS 3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, low privileges required, and requirement for user interaction. The impact includes limited confidentiality and integrity loss, such as session hijacking, unauthorized actions on behalf of the victim, or theft of sensitive information accessible in the browser context. Availability is not impacted. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating the need for vigilance and prompt remediation once available. The vulnerability is classified under CWE-79, a common web application security weakness related to improper neutralization of input during web page generation.

For European organizations using Adobe Experience Manager, this vulnerability poses a moderate risk. AEM is widely used by enterprises, government agencies, and large organizations for content management and digital experience delivery. Exploitation could lead to unauthorized actions performed in the context of legitimate users, data leakage, and reputational damage. Sensitive internal portals or customer-facing websites hosted on AEM could be targeted, potentially exposing personal data protected under GDPR. The stored nature of the XSS increases risk as malicious scripts persist and affect multiple users. While the attack requires some authentication and user interaction, the low privilege requirement means even less trusted users or compromised accounts could be leveraged. This could facilitate lateral movement or privilege escalation within organizations. The lack of known exploits currently reduces immediate risk but also means organizations should proactively monitor and prepare for potential exploitation attempts. The impact on confidentiality and integrity is significant enough to warrant prompt attention, especially for sectors handling sensitive data such as finance, healthcare, and public administration.

European organizations should implement the following specific mitigations: 1) Immediately audit all AEM instances to identify usage of vulnerable versions (6.5.22 and earlier) and prioritize upgrade to the latest patched version once available. 2) In the interim, apply strict input validation and output encoding on all user-supplied data in form fields, leveraging AEM’s built-in security features or web application firewalls (WAFs) with custom rules to detect and block malicious payloads. 3) Restrict access to AEM authoring and administrative interfaces to trusted networks and users, employing multi-factor authentication to reduce risk from low-privileged attackers. 4) Monitor web server and application logs for suspicious activity indicative of XSS attempts, such as unusual script injection patterns or repeated form submissions. 5) Educate users about the risks of clicking unknown links or interacting with untrusted content within AEM-managed sites. 6) Implement Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 7) Coordinate with Adobe support and subscribe to security advisories to receive timely patch releases and guidance. These targeted actions go beyond generic advice by focusing on immediate risk reduction and layered defenses tailored to AEM environments.