CVE-2025-46948 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 platform. When a victim user subsequently visits a page containing the compromised form field, the malicious script executes in their browser context. Stored XSS differs from reflected XSS in that the malicious payload is permanently stored on the server, increasing the likelihood of exploitation and impact. The vulnerability arises from insufficient input validation and output encoding on user-supplied data in form fields, enabling script injection. The CVSS 3.1 base score is 5.4 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), user interaction required (UI:R), scope changed (S:C), and impacts on confidentiality and integrity (C:L/I:L) but no impact on availability (A:N). The scope change means the vulnerability affects resources beyond the initially vulnerable component, potentially impacting other parts of the application or user sessions. Although no known exploits are currently reported in the wild, the vulnerability's nature and the widespread use of AEM in enterprise content management make it a significant concern. Attackers exploiting this flaw could steal session cookies, perform actions on behalf of users, or deliver malware, leading to data leakage and reputational damage. The lack of available patches at the time of publication underscores the need for immediate mitigation steps by affected organizations.

For European organizations using Adobe Experience Manager, this vulnerability poses a risk of client-side attacks that could compromise user sessions and sensitive data. Given AEM's role in managing web content and digital assets, exploitation could lead to unauthorized access to internal portals, customer information, or administrative functions. The confidentiality and integrity of data accessed through AEM portals could be undermined, potentially violating GDPR requirements for data protection and privacy. Additionally, successful exploitation could facilitate further attacks such as phishing or malware distribution targeting European users. The medium severity rating reflects that while the attack requires some user interaction and low privileges, the scope change and potential for persistent malicious code injection elevate the risk. Organizations in sectors such as finance, government, healthcare, and e-commerce—where AEM is commonly deployed—may face increased exposure, with consequences including regulatory penalties, operational disruption, and erosion of customer trust.

Beyond generic advice, European organizations should implement the following specific measures: 1) Immediately audit all AEM instances to identify vulnerable versions (6.5.22 and earlier) and restrict access to administrative and content management interfaces to trusted personnel only. 2) Apply strict input validation and output encoding on all form fields, especially those accepting user-generated content, to prevent script injection. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing AEM content. 4) Monitor web application logs and user activity for unusual input patterns or repeated form submissions indicative of attempted exploitation. 5) Isolate AEM environments from critical internal networks to limit lateral movement if exploitation occurs. 6) Educate users and administrators about the risks of XSS and the importance of cautious interaction with web content. 7) Engage with Adobe support channels for timely patch releases and apply updates as soon as they become available. 8) Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block XSS payloads targeting AEM forms. These targeted actions will reduce the attack surface and mitigate the risk until official patches are released.