CVE-2026-75704 in Experience Manager 6.5
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 an attacker to inject and execute malicious JavaScript code within the context of a victim's web browser session. This type of vulnerability arises when an application processes user-supplied input without proper validation or sanitization before writing it back into the DOM structure that is subsequently rendered by the browser engine. In this specific instance, the flaw resides in how Adobe Experience Manager handles certain inputs on its client-side interface, creating a pathway where untrusted data influences the execution environment of active scripts running within the user's context.
The technical mechanism behind this exploitation involves an attacker crafting a malicious webpage or link that contains specially constructed input designed to trigger the vulnerability when accessed by a victim using Adobe Experience Manager. When the victim interacts with the crafted content, typically through clicking a link or visiting a specific URL, the browser parses the injected script and executes it as if it were part of the legitimate application code. Because the execution occurs within the same origin context as the vulnerable application, the malicious scripts inherit all the privileges associated with that site, including access to cookies, session tokens, local storage data, and potentially sensitive user information displayed on the page.
This vulnerability is categorized under CWE-79 in the Common Weakness Enumeration standard, which defines Improper Neutralization of Input During Web Page Generation as a critical input validation failure. From an offensive security perspective aligned with the MITRE ATT&CK framework, this exploit maps to techniques involving Client-Side Scripting and potentially Data Exfiltration via browser-based attacks such as Cross-Site Request Forgery or session hijacking if cookies are accessible without proper HttpOnly flags. The scope of impact is significant because it enables attackers to bypass server-side security controls that might otherwise mitigate similar threats, shifting the attack surface entirely to the client side where defense mechanisms like Content Security Policy must be meticulously configured and enforced by administrators.
The operational impact of this vulnerability extends beyond simple script execution, potentially leading to complete compromise of user accounts if session tokens are stolen or manipulation of application behavior such as altering form submissions or redirecting users to phishing sites. Since exploitation requires user interaction, the attack relies on social engineering tactics where a victim must be persuaded to visit the malicious webpage or interact with the crafted content in any way that triggers the DOM modification. This requirement for human involvement does not diminish the severity but rather defines the vector of entry as an active engagement scenario rather than a passive remote code execution flaw.
To mitigate this risk, administrators should ensure that Adobe Experience Manager is updated to the latest version provided by Adobe, which includes patches addressing these input validation gaps on the client side. Additionally, implementing robust Content Security Policy headers can significantly reduce the impact of successful XSS attacks by restricting the sources from which scripts can be loaded and executed. Developers reviewing custom integrations or extensions within Adobe Experience Manager should enforce strict output encoding and context-aware escaping for all data rendered into HTML attributes, JavaScript variables, and DOM properties to prevent injection vectors from being realized in production environments.