CVE-2026-19713 in Experience Manager 6.5
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, commonly referred to as DOM XSS. This type of vulnerability differs from traditional reflected or stored XSS because the malicious script execution originates not directly from server responses but through modifications to the DOM environment by untrusted data acting as input for JavaScript that subsequently executes in an unsafe context. The core technical flaw lies in the application's failure to properly sanitize, validate, or encode user-supplied input before it is processed by client-side scripts and written back into the DOM. When a victim interacts with a crafted webpage designed to exploit this weakness, their browser parses the malicious content as executable JavaScript rather than safe data, allowing an attacker to inject arbitrary code that runs within the security context of the Adobe Experience Manager application domain.
The operational impact of this vulnerability is significant because it allows for session hijacking, credential theft, defacement, or redirection to phishing sites without requiring server-side compromise. Since the scope has changed and exploitation requires user interaction, an attacker must lure a victim to visit a specially crafted webpage that triggers the vulnerable JavaScript execution path within the Adobe Experience Manager interface. Once executed, the malicious script can access sensitive cookies, local storage data, or perform actions on behalf of the authenticated user, effectively bypassing same-origin policy protections if the application does not implement strict Content Security Policy headers or other mitigating controls. This poses a severe risk to organizations relying on Adobe Experience Manager for digital asset management and content delivery, as it undermines trust in the platform's integrity and exposes users to social engineering attacks facilitated by the injected script.
From an industry standards 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 written directly into a sink without proper encoding. In terms of the MITRE ATT&CK framework for enterprise security, this exploit technique maps to T1059 Command and Control scripting or potentially T1189 Drive-by Compromise if used in conjunction with other payloads, though primarily it represents an injection attack vector targeting client-side logic rather than server infrastructure. Defenders should recognize that DOM XSS vulnerabilities are particularly dangerous because they often evade traditional web application firewalls that focus on HTTP request analysis, as the malicious activity occurs entirely within the browser environment after page load.
To mitigate this vulnerability and prevent similar attacks in Adobe Experience Manager environments, administrators must ensure that all client-side scripts implement rigorous input validation and output encoding strategies. Developers should avoid using unsafe DOM APIs such as innerHTML or document.write with untrusted data, opting instead for safer alternatives like textContent which do not parse content as HTML or JavaScript. Implementing a robust Content Security Policy is essential to restrict the sources from which scripts can be loaded and executed, thereby limiting the damage even if an injection attempt succeeds. Additionally, keeping Adobe Experience Manager updated to the latest patch level provided by Adobe ensures that known client-side vulnerabilities are addressed through code fixes rather than relying solely on defensive configurations. Regular security assessments focusing on DOM-based attack vectors should also be conducted to identify other potential sinks where untrusted data might inadvertently trigger script execution within the application's complex JavaScript architecture.