CVE-2025-46879 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 maliciously crafted form field, the injected script executes in their browser context. 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, reflecting a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) indicates that the attack can be performed remotely over the network with low attack complexity, requires low privileges, and user interaction is necessary (the victim must visit the compromised page). The vulnerability impacts confidentiality and integrity by enabling script execution that could steal session tokens, perform actions on behalf of the user, or manipulate displayed content. Availability is not impacted. The scope is changed (S:C), meaning the vulnerability affects components beyond the initially vulnerable component, potentially impacting other users. No known exploits are reported in the wild as of the publication date, and no patches or mitigations have been linked yet. Adobe Experience Manager is a widely used enterprise content management system, often deployed by large organizations for managing digital assets and web content, making this vulnerability significant in environments where AEM is in use.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of user sessions and data accessed via Adobe Experience Manager portals. Attackers exploiting this flaw could hijack user sessions, steal sensitive information, or perform unauthorized actions within the context of the victim’s browser session. Given that AEM is commonly used by government agencies, financial institutions, and large enterprises across Europe to manage public-facing and internal websites, exploitation could lead to data breaches, reputational damage, and regulatory non-compliance under GDPR. The requirement for low privileges to inject malicious scripts lowers the barrier for attackers, increasing the likelihood of exploitation in environments where user input is not tightly controlled. The need for user interaction (visiting the compromised page) means phishing or social engineering could be leveraged to trigger the attack. The vulnerability’s scope change indicates potential for broader impact beyond the initially targeted component, possibly affecting multiple users or systems within an organization. Although no known exploits are reported yet, the medium severity and widespread use of AEM in Europe necessitate proactive risk management.

European organizations using Adobe Experience Manager should immediately review and restrict permissions for users who can submit data to vulnerable form fields, minimizing the risk of malicious input. Implement strict input validation and output encoding on all user-supplied data within AEM, especially in form fields and content management interfaces. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM-managed sites. Monitor web application logs for unusual input patterns or repeated attempts to inject scripts. Educate users and administrators about the risks of clicking on suspicious links or visiting untrusted pages within AEM portals. Since no official patches are currently linked, organizations should engage with Adobe support to obtain any available hotfixes or recommended configuration changes. Consider deploying Web Application Firewalls (WAFs) with rules tailored to detect and block XSS payloads targeting AEM. Regularly update AEM to the latest versions once patches addressing this vulnerability are released. Conduct security assessments and penetration testing focused on input handling in AEM to identify and remediate similar vulnerabilities proactively.