CVE-2025-46843 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, allowing a low-privileged attacker to inject malicious JavaScript code that is persistently stored on the server. When a victim user accesses a page containing the compromised form field, the malicious script executes within their browser context. This type of stored XSS can lead to session hijacking, unauthorized actions on behalf of the user, credential theft, or delivery of further malware. The vulnerability requires low privileges to exploit but does require user interaction, as the victim must visit the affected page. The CVSS v3.1 base score is 5.4 (medium severity), reflecting network attack vector, low attack complexity, low privileges required, but requiring user interaction and impacting confidentiality and integrity with no availability impact. The vulnerability has been publicly disclosed as of June 10, 2025, but no known exploits are currently reported in the wild. No official patches or mitigation links have been provided yet by Adobe, indicating organizations must rely on interim controls until a fix is released.

For European organizations using Adobe Experience Manager, this vulnerability poses a significant risk to the confidentiality and integrity of web applications and their users. A successful exploit could allow attackers to steal session cookies, impersonate users, or manipulate content, potentially leading to data breaches or unauthorized administrative actions. Given AEM's widespread use in enterprise content management, marketing websites, and customer portals, exploitation could disrupt business operations and damage brand reputation. The vulnerability's requirement for user interaction means phishing or social engineering campaigns could be used to lure victims to maliciously crafted pages. European organizations handling sensitive customer data or regulated information (e.g., GDPR-protected data) could face compliance violations and financial penalties if exploited. Additionally, the cross-site scripting flaw could be leveraged as a stepping stone for more advanced attacks within the victim's network.

Until Adobe releases an official patch, European organizations should implement the following specific mitigations: 1) Conduct a thorough audit of all AEM form fields and input points to identify and temporarily disable or restrict vulnerable components. 2) Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious script injection patterns targeting AEM forms. 3) Enforce strict Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. 4) Educate users and administrators about the risk of clicking untrusted links or visiting unknown pages hosted on AEM sites. 5) Monitor logs for unusual input patterns or repeated attempts to inject scripts. 6) Isolate AEM instances from critical internal networks to reduce lateral movement risk. 7) Prepare for rapid deployment of patches once Adobe releases a fix by maintaining up-to-date asset inventories and patch management processes specific to AEM deployments.