CVE-2026-75678 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 fundamentally stems from insufficient validation and sanitization of untrusted input before it is processed by the browser's rendering engine. This specific type of injection allows an attacker to inject malicious scripts into web pages viewed by other users because the application fails to properly neutralize special characters that have meaning within HTML or JavaScript contexts. The vulnerability resides in how the AEM interface handles dynamic content updates, where data derived from external sources is directly assigned to properties such as innerHTML or used in document.write operations without adequate encoding checks. This architectural weakness creates a pathway for code execution because the browser interprets the injected payload not merely as static text but as executable instructions within the current page's security context.
The operational impact of this vulnerability centers on the ability of an attacker to execute arbitrary JavaScript commands within the victim’s web session, effectively hijacking the user's interaction with Adobe Experience Manager. Since the scope is changed from a standard reflected or stored XSS model, the attack vector relies heavily on social engineering and environmental manipulation rather than direct server-side injection points. An adversary must craft a specific webpage that triggers the vulnerable code path within AEM when accessed by an authenticated administrator or content editor. Once executed, the malicious script can perform actions such as stealing session cookies, capturing authentication tokens, performing unauthorized administrative changes to digital assets, or redirecting the user to phishing sites designed to harvest credentials. The severity is amplified because Adobe Experience Manager typically handles sensitive enterprise data and critical business processes, meaning a successful exploit could lead to significant confidentiality breaches and integrity violations within an organization's digital infrastructure.
From a threat intelligence perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific mechanism falls under the sub-category of DOM-based XSS where the vulnerability is triggered by client-side scripts rather than server-side code execution. In terms of adversary tactics and techniques, this exploitation method maps to MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically JavaScript variants used for initial access or lateral movement within a web application environment. The requirement for user interaction classifies the attack under Initial Access vectors where human factors are leveraged to bypass technical controls through deceptive means such as malicious links embedded in emails or compromised websites.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Adobe has released patches that address this specific flaw by enforcing stricter input validation rules within the AEM client-side libraries. Administrators should immediately apply these security updates to all instances of Adobe Experience Manager involved in their environment. Beyond patching, developers implementing custom components or integrations with AEM must adopt secure coding practices that prioritize output encoding and context-aware sanitization. Utilizing Content Security Policy headers can also help mitigate the impact by restricting the sources from which scripts are allowed to execute, thereby preventing many types of injected code even if it manages to bypass input filters. Regular security audits and penetration testing focused on client-side vulnerabilities are essential to identify similar weaknesses in custom extensions or third-party integrations that may not be covered by standard vendor patches.