CVE-2026-75680 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 critical client-side security flaw classified as a Document Object Model based Cross-Site Scripting vulnerability, which fundamentally alters the traditional scope of attack by shifting execution context to the end-user's browser environment rather than solely targeting server-side infrastructure. This specific type of vulnerability arises when an application processes user-supplied input without adequate validation or sanitization before updating the DOM dynamically, allowing malicious scripts to be injected and executed within the trusted security context of the web page currently loaded in the victim's browser. The presence of this flaw indicates a failure in implementing proper output encoding or content security policies that would otherwise neutralize script tags or event handlers embedded within dynamic HTML structures generated by the application logic.
The operational impact of exploiting this vulnerability is severe, as it enables an attacker to execute arbitrary JavaScript code with the same privileges and permissions granted to legitimate scripts running on the affected Adobe Experience Manager pages. This capability allows for a wide range of malicious activities including session hijacking through theft of authentication cookies or tokens, credential harvesting by injecting fake login forms that mimic legitimate interfaces, keylogging to capture sensitive data entered by users, and defacement of the user interface to display misleading information. Because the scope is changed to include client-side execution, the attack does not require direct access to the server infrastructure but instead relies on social engineering or drive-by techniques where a victim must interact with a crafted webpage that triggers the vulnerable DOM manipulation routine within their browser session.
From an industry standards perspective, this vulnerability aligns closely with CWE-79 which defines Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting and specifically falls under the sub-category for DOM-based XSS where the script is executed due to modifying the DOM environment in a negative way rather than through server-side rendering. In terms of tactical mapping, this exploit technique corresponds to ATT&CK T1059 which covers Command and Scripting Interpreter execution via browser scripts such as JavaScript or VBScript, allowing attackers to perform actions like data exfiltration from local storage or keystroke injection without triggering traditional network-based intrusion detection systems that monitor server requests.
Mitigation strategies must focus on implementing robust input validation and output encoding mechanisms within the client-side code responsible for handling dynamic content updates. Developers should ensure that all user-supplied data is strictly validated against a whitelist of expected characters before being used in DOM manipulation functions such as innerHTML or document.write, which are common vectors for this type of flaw. Additionally, deploying a strict Content Security Policy header can significantly reduce the impact by preventing the execution of inline scripts and restricting sources from which external resources can be loaded, thereby neutralizing many potential payloads even if they manage to bypass initial validation checks. Regular security audits focusing on client-side code paths and automated static analysis tools configured to detect DOM-based XSS patterns are essential for identifying and remediating these vulnerabilities before deployment in production environments.