CVE-2026-75674 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 Document Object Model based cross-site scripting vulnerability that allows an attacker to inject and execute arbitrary malicious JavaScript code within the context of a victim's browser session. This specific flaw arises from insufficient validation or sanitization of user-supplied input when it is processed by client-side scripts, enabling the manipulation of the DOM environment in ways that bypass standard security controls. The core technical issue lies in how the application handles dynamic content updates without properly encoding special characters or restricting dangerous event handlers, which creates a pathway for script injection directly into the active webpage structure rather than through server-rendered output.
The operational impact of this vulnerability is significant because it fundamentally alters the scope of potential attacks from remote code execution on the server to client-side compromise within the user's browser environment. By exploiting this flaw, an attacker can perform actions such as stealing session cookies, hijacking user sessions, defacing web pages, or redirecting users to malicious sites that may host further malware. Since exploitation requires a victim to visit a crafted webpage or interact with specific elements of the vulnerable application, the attack vector is considered active and necessitates social engineering tactics to lure targets into triggering the exploit conditions. This shifts the risk profile from purely automated network-based attacks to targeted incidents requiring user interaction, which can still lead to severe data breaches if administrative credentials or sensitive business information are accessible within that browser session.
From a classification perspective, this vulnerability aligns with CWE-79, known as Improper Neutralization of Input During Web Page Generation, commonly referred to as Cross-Site Scripting. The specific mechanism described falls under the sub-category of DOM-based XSS where the vulnerability is triggered by client-side JavaScript rather than server-side code execution. In terms of offensive security frameworks, this behavior maps closely to MITRE ATT&CK technique T1059, specifically Command and Scripting Interpretation via browser scripts, as well as T1189 Drive-by Compromise if the crafted webpage automatically triggers upon visit without further interaction beyond loading the page. Understanding these mappings helps in prioritizing remediation efforts based on established industry standards for web application security weaknesses.
Mitigation strategies must focus on implementing robust input validation and output encoding mechanisms within both the client-side JavaScript code and any server-side components that feed data to the DOM. Developers should ensure that all dynamic content is properly escaped before being inserted into HTML elements, attributes, or event handlers using context-aware encoding techniques such as HTML entity encoding for text nodes and URL encoding for query parameters. Additionally, deploying a Content Security Policy header can significantly reduce the impact of successful XSS attacks by restricting the sources from which scripts are allowed to load and execute. Regular security testing including static application security testing and dynamic analysis is recommended to identify similar patterns in other parts of the Adobe Experience Manager implementation before they can be exploited in production environments.