CVE-2026-75690 in Experience Manager 6.5
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 exploitation by shifting focus from server-side injection to browser environment manipulation. This specific type of cross-site scripting allows an attacker to inject malicious scripts directly into the DOM tree rather than relying on server-rendered content or direct input fields that are reflected back immediately. The technical flaw resides in how the application processes and renders dynamic data within the client-side JavaScript context, failing to adequately sanitize or encode user-supplied values before they interact with sensitive DOM APIs such as innerHTML, document.write, or unsafe event handlers. This lack of proper validation enables malicious code to execute natively within the browser's execution environment, bypassing many traditional server-side security controls that typically filter input at the application layer.
The operational impact of this vulnerability is significant because it allows for a wide range of attacks including session hijacking, credential theft, and defacement of the user interface by executing arbitrary JavaScript code in the context of the victim's browser. Since the scope has changed to reflect client-side execution, the attack vector requires direct interaction from the target user, specifically necessitating that they visit a crafted webpage or click on a malicious link designed to trigger the DOM manipulation sequence. Once executed, the injected script can access cookies, local storage, and other sensitive data associated with the authenticated session of Adobe Experience Manager, potentially leading to unauthorized administrative actions if the victim holds elevated privileges within the platform. This represents a severe risk to organizations relying on this content management system for secure digital experience delivery, as it compromises the integrity and confidentiality of user sessions without requiring server-side compromise.
From an industry standards perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting, specifically under subcategories related to DOM-based XSS where input is written directly into the DOM via JavaScript rather than HTML output. Furthermore, in terms of tactical mapping within the MITRE ATT&CK framework for Enterprise or Mobile, this exploitation technique falls under T1059 Command and Scripting Interpreter with a focus on client-side scripting languages such as ECMAScript or JavaScript. The attack lifecycle involves initial access through social engineering via the crafted webpage followed by execution of malicious scripts that may lead to credential harvesting or further lateral movement within the internal network if session tokens are exfiltrated.
Mitigation strategies must prioritize both immediate technical fixes and long-term architectural improvements. Developers should implement strict input validation and output encoding mechanisms specifically tailored for DOM-based contexts, ensuring that all dynamic data is sanitized before being rendered into the document structure using safe APIs like textContent instead of innerHTML where possible. Additionally, deploying a Content Security Policy with appropriate directives such as script-src can significantly reduce the impact by restricting the sources from which scripts are allowed to execute, thereby preventing inline scripts and unauthorized external resources from running even if injection occurs. Regular security audits focusing on client-side code paths and automated static analysis tools configured to detect DOM-based XSS patterns are essential for maintaining a secure posture in Adobe Experience Manager deployments.