CVE-2026-75646 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 • 09/08/2026
Adobe Experience Manager contains a critical client-side security flaw classified as a Document Object Model-based Cross-Site Scripting vulnerability, which fundamentally alters how the application processes untrusted input within the browser environment. This specific weakness stems from an improper neutralization of special elements used in script statements, allowing malicious scripts to be injected into web pages viewed by other users. The root cause lies in the failure to properly validate or sanitize user-supplied data before it is written back to the DOM using methods that allow execution, such as innerHTML or eval, without adequate encoding or escaping mechanisms. This architectural oversight creates a direct pathway for attackers to inject executable code into the context of trusted web pages served by Adobe Experience Manager.
The operational impact of this vulnerability is significant because it enables an attacker to execute arbitrary JavaScript commands within the security context of the victim's browser session. By manipulating the DOM environment, the malicious script gains access to sensitive information stored in cookies, local storage, or session tokens associated with the authenticated user. This can lead to complete account takeover, where the attacker impersonates the legitimate user to perform unauthorized actions such as modifying content, stealing credentials, or exfiltrating confidential data from the enterprise portal. Furthermore, because the scope of this vulnerability has been changed and expanded in recent assessments, it indicates that previously identified mitigation boundaries are insufficient, potentially exposing a wider range of endpoints within the Adobe Experience Manager ecosystem to exploitation through crafted webpages or malicious links.
From an industry standard perspective, this flaw aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The attack vector is categorized under ATT&CK technique T1059, specifically the execution of scripts via browser-side mechanisms like JavaScript or VBScript within a web application context. This classification highlights that the vulnerability relies on social engineering elements to trick users into visiting maliciously crafted pages, leveraging their existing trust in the Adobe Experience Manager domain to bypass same-origin policy protections. The requirement for user interaction means that while automated remote exploitation is not possible without this step, the ease of delivery through phishing or compromised third-party sites makes it a high-risk threat vector against enterprise environments where employees frequently interact with external links.
To mitigate this risk, organizations must implement strict input validation and output encoding strategies within their Adobe Experience Manager configurations and custom codebases. Developers should ensure that all user-supplied data is encoded according to the context in which it will be rendered, such as HTML entity encoding for body content or 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 audits focusing on DOM-based vulnerabilities and continuous monitoring for anomalous script execution patterns in browser consoles are essential steps to maintain the integrity of the Adobe Experience Manager deployment against this evolving threat landscape.