CVE-2026-75716 in Experience Manager as a Cloud Service
Summary
by MITRE • 09/09/2026
Adobe Experience Manager is affected by a DOM-based Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this issue by manipulating the DOM environment to execute malicious JavaScript within the context of the victim's browser. Exploitation of this issue requires user interaction in that a victim must visit a crafted webpage. Scope is changed.
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Analysis
by VulDB Data Team • 09/09/2026
Adobe Experience Manager contains a client-side vulnerability classified as a Document Object Model based Cross-Site Scripting flaw, which allows for the execution of arbitrary JavaScript code within the security context of the vulnerable application. This type of vulnerability arises when an web application processes user-supplied data without proper validation or encoding before inserting it into the DOM. In this specific instance, the input handling logic fails to sanitize potentially malicious scripts embedded in URLs, form inputs, or other dynamic content sources. When a victim interacts with a crafted webpage designed by an attacker, their browser parses the manipulated DOM structure and executes the injected script as if it were legitimate code originating from Adobe Experience Manager itself. This represents a classic injection flaw where untrusted data is treated as executable code rather than passive data, leading to a fundamental breach of the same-origin policy that normally restricts how documents or scripts loaded from one origin can interact with resources from another origin.
The operational impact of this vulnerability is significant because it enables attackers to perform actions on behalf of the victim within the context of the trusted Adobe Experience Manager domain. Once the malicious script executes, it has access to all cookies, local storage data, session tokens, and other sensitive information associated with that domain. An attacker can leverage this access to hijack user sessions by stealing authentication credentials or session identifiers, effectively impersonating the legitimate user. Furthermore, the vulnerability allows for defacement of the web application interface, redirection of users to malicious sites hosting further malware, or keylogging activities to capture additional sensitive input such as passwords and credit card numbers. The requirement for user interaction means that this is typically an active exploitation vector rather than a passive one, often requiring social engineering tactics where the victim must be tricked into visiting a specially crafted URL or clicking on a malicious link embedded in emails or other web pages.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific mechanism falls under the sub-category of DOM-based XSS where the vulnerability is present on the client side rather than in server-side code processing. In terms of offensive security frameworks such as MITRE ATT&CK, this exploitation technique maps to T1059 Command and Control via Browser Proxy or more broadly to techniques involving Web Protocol Abuse for initial access and credential theft. The change in scope indicates that previous assessments may have underestimated the impact or attack vector complexity, now recognizing that direct browser manipulation is a viable path to compromise sensitive enterprise content management systems like Adobe Experience Manager which often handle high-value corporate data and intellectual property.
Mitigation strategies must address both immediate remediation and long-term defensive posture improvements. The primary technical fix involves implementing strict input validation and output encoding on the client-side scripts responsible for handling dynamic content. Developers should utilize context-aware escaping techniques to ensure that any user-supplied data inserted into the DOM is treated as text rather than executable code. Additionally, adopting a Content Security Policy can significantly reduce the impact of such vulnerabilities by restricting the sources from which scripts can be loaded and executed, thereby preventing inline script execution and blocking connections to unauthorized domains. On an administrative level, organizations should ensure that Adobe Experience Manager instances are updated to the latest patch version provided by Adobe, as these updates typically include fixes for known DOM manipulation flaws. Regular security audits focusing on client-side code review and automated static analysis tools configured to detect XSS patterns can further help in identifying similar weaknesses before they reach production environments.