CVE-2026-75671 in Experience Manager
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 Cross-Site Scripting vulnerability classified under CWE-79, which allows an attacker to inject and execute malicious JavaScript code within the context of the victim's browser. This specific flaw stems from insufficient validation or sanitization of user-supplied input that is subsequently written into the Document Object Model without proper encoding. By manipulating the DOM environment through crafted web pages, an adversary can bypass standard security controls such as Content Security Policy if not strictly configured to prevent script execution in untrusted contexts. The vulnerability falls under the MITRE ATT&CK technique T1059.007 for JavaScript-based attacks, where the attacker leverages browser-native functionality to achieve their objectives without requiring server-side compromise or binary exploitation.
The operational impact of this vulnerability is significant because it enables session hijacking, credential theft, and defacement of the user interface by executing arbitrary scripts in a privileged context. Since the scope has changed from previous iterations, the attack vector now potentially affects a broader range of components within Adobe Experience Manager that handle dynamic content rendering or URL parameter processing. An attacker can craft a malicious webpage containing encoded JavaScript payloads designed to exploit this DOM manipulation flaw. When an authenticated user with administrative privileges visits this crafted page while logged into Adobe Experience Manager, the browser will execute the injected script as if it originated from the trusted application domain. This allows the attacker to access sensitive data stored in local storage or cookies, perform actions on behalf of the victim such as modifying site configurations or publishing content, and potentially pivot to further attacks within the internal network infrastructure.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Administrators should apply the latest security patches provided by Adobe for their specific version of Experience Manager immediately upon release. From a development perspective, implementing strict input validation and output encoding is critical to prevent DOM-based XSS vectors from succeeding. Developers should utilize safe APIs such as textContent instead of innerHTML when inserting user data into the DOM, ensuring that any dynamic content is treated as plain text rather than executable code. Additionally, enforcing a robust Content Security Policy with nonces or hashes can significantly reduce the impact by preventing unauthorized script execution even if injection occurs. Regular security audits and static application security testing should be integrated into the development lifecycle to identify similar vulnerabilities before deployment.