CVE-2026-75725 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 critical client-side security flaw classified as a Document Object Model-based Cross-Site Scripting vulnerability, commonly referred to as DOM XSS. This type of vulnerability differs from traditional reflected or stored XSS because the malicious script execution originates not from server-rendered content but from unsafe manipulation of the browser's internal document object model by JavaScript code running within the page itself. The root cause typically involves an application reading data from a source such as window.location, innerHTML, or document.URL and then writing that unvalidated input to a sink like eval(), setTimeout(), or setting innerHTML without proper sanitization. In this specific instance involving Adobe Experience Manager, the underlying code fails to adequately validate or encode user-supplied input before it is processed by the browser's rendering engine, allowing an attacker to inject executable JavaScript payloads directly into the DOM structure during runtime.
The operational impact of exploiting this vulnerability allows a remote attacker to execute arbitrary scripts in the security context of the victim’s web browser. Because the scope has changed and exploitation requires user interaction, the attack vector relies heavily on social engineering or targeted delivery mechanisms where a victim must be induced to visit a specially crafted webpage controlled by the adversary. Once the victim accesses this malicious page, the injected script runs with the same privileges as legitimate scripts from Adobe Experience Manager. This enables the attacker to perform actions such as stealing session cookies, hijacking user sessions, performing unauthorized administrative actions on behalf of the authenticated user, capturing keystrokes, or redirecting the user to phishing sites. The ability to execute code within the trusted domain context effectively bypasses same-origin policy protections that are designed to isolate content from different sources, thereby compromising the confidentiality and integrity of the application's data and functionality.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation known as Cross-site Scripting, specifically falling under subcategories related to DOM-based XSS where input is read from a source and written to a sink without validation. In the context of the MITRE ATT&CK framework for enterprise security, this exploit technique maps to T1059 Command and Control Execution via Browser or Web Application APIs, as it leverages standard browser mechanisms to execute malicious commands. It also relates to T1204 User Execution, since the initial access requires the victim to interact with a crafted link or webpage. The change in scope indicates that while remote code execution is not achieved on the server side, the compromise of client-side integrity can lead to significant lateral movement within an organization if administrative credentials are compromised through session hijacking.
Mitigation strategies for this vulnerability must focus on both immediate remediation and long-term defensive coding practices. Adobe has likely released a patch or update that addresses the specific input validation gaps in the affected components, so administrators should apply the latest security updates to their Adobe Experience Manager instances immediately. From a development standpoint, engineers must implement strict output encoding when writing data back into the DOM using sinks like innerHTML, ensuring that special characters are escaped appropriately for HTML contexts. For dynamic code execution functions such as eval or setTimeout, input validation is critical; developers should avoid these methods entirely where possible and instead use safer alternatives like addEventListener with pre-defined function references rather than string-based script injection. Additionally, implementing a Content Security Policy (CSP) can significantly reduce the impact of successful XSS attacks by restricting the sources from which scripts are allowed to load and execute, thereby preventing inline scripts or unauthorized external domains from running malicious code even if an injection attempt succeeds.