CVE-2026-75693 in Experience Manager as a Cloud Service
Summary
by MITRE • 09/08/2026
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 an attacker to inject and execute malicious JavaScript code within the context of a victim's web browser session. This specific type of vulnerability arises from improper validation or sanitization of user-supplied input that is subsequently used to update the DOM without proper encoding. Unlike server-side XSS where the payload is stored on the target system, this client-side execution relies entirely on manipulating the local environment of the browser after the page has loaded, making it a dynamic and context-dependent attack vector that targets the immediate runtime behavior of the application interface rather than persistent data storage.
The technical mechanism behind this flaw involves the manipulation of DOM elements through crafted input parameters or URL fragments that are processed by JavaScript functions within Adobe Experience Manager without adequate security checks. When an untrusted source, such as a query string or hash fragment, is read and written into the DOM using methods like innerHTML or document.write without sanitization, it enables the execution of arbitrary scripts. This bypasses same-origin policy protections because the malicious code runs with the privileges of the trusted Adobe Experience Manager domain, allowing access to cookies, session tokens, local storage data, and other sensitive information associated with that specific web application context.
Exploitation of this vulnerability requires active user interaction, specifically necessitating that a victim visits a specially crafted webpage or clicks on a malicious link designed to trigger the DOM manipulation sequence. This dependency on social engineering elements means that while the technical flaw is present in the software architecture, successful exploitation hinges on convincing an authorized user to initiate the attack chain by interacting with external content. Once triggered, the attacker can perform actions such as session hijacking, credential theft, defacement of the application interface, or redirecting users to phishing sites, thereby compromising the confidentiality and integrity of the administrative console or content management workflows managed through Adobe Experience Manager.
From a classification perspective, this vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting, specifically falling under subcategories related to DOM-based XSS where client-side scripts process untrusted data dynamically. In the context of the MITRE ATT&CK framework for enterprise security, this behavior maps directly to techniques involving Client-Side Injection and potentially Account Manipulation if session tokens are stolen, reflecting a T1059 category activity that focuses on executing code within the victim's environment rather than compromising server infrastructure directly.
Mitigation strategies should focus primarily on implementing robust input validation and output encoding mechanisms at the client-side level to ensure that all dynamic content is treated as data rather than executable code. Developers must utilize safe DOM manipulation APIs such as textContent or createElement instead of innerHTML when inserting untrusted data, thereby preventing script execution from injected strings. Additionally, deploying a Content Security Policy with strict directives can significantly reduce the impact by restricting the sources from which scripts are allowed to load and execute, effectively neutralizing many XSS payloads even if they manage to bypass initial validation checks through alternative vectors within the application logic.