CVE-2026-75637 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 critical client-side security flaw classified as a Document Object Model-based Cross-Site Scripting vulnerability, commonly referred to as DOM XSS. This specific type of injection differs from traditional reflected or stored XSS because the malicious script execution originates not from server-rendered content but from untrusted data that is read by JavaScript and subsequently passed to dangerous sinks within the browser's runtime environment. The core technical flaw lies in the application's failure to properly sanitize, validate, or encode user-supplied input before it influences the DOM structure or executes code via functions such as innerHTML, document.write, or eval. When an attacker crafts a malicious webpage containing specially constructed JavaScript payloads, they can manipulate the victim's browser environment to execute arbitrary scripts within the security context of the Adobe Experience Manager application.
The operational impact of this vulnerability is significant because it allows for session hijacking, credential theft, and defacement of the user interface if the victim has administrative privileges or access to sensitive data within the platform. Since the attack vector relies on DOM manipulation rather than server-side injection, traditional web application firewalls that inspect HTTP request bodies may fail to detect the malicious activity unless they are specifically configured for client-side script analysis. The requirement for user interaction means that an attacker must lure a victim to visit a crafted webpage or click a malicious link, often through social engineering tactics such as phishing emails or compromised legitimate websites hosting exploit kits. Once executed, the malicious JavaScript can perform actions on behalf of the authenticated user, potentially leading to unauthorized access to administrative functions, exfiltration of sensitive configuration data, or further propagation within the network if combined with other vulnerabilities.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation, specifically in the context of client-side script execution. It also maps to MITRE ATT&CK technique T1059, Command and Scripting Interpreter, as it enables the execution of arbitrary code within the browser sandbox. The change in scope noted in the vulnerability description indicates that previous assessments may have underestimated the impact or attack vector complexity, now recognizing that client-side manipulation is a viable path to compromise.
To mitigate this risk, developers must implement strict input validation and output encoding strategies for all data that interacts with DOM elements. Utilizing Content Security Policy headers can significantly reduce the blast radius by restricting the sources from which scripts are allowed to load or execute. Additionally, modern frameworks often provide built-in protections against XSS if used correctly, but manual code reviews should be conducted to identify unsafe JavaScript patterns such as direct assignment of user input to innerHTML properties. Regular security testing using dynamic analysis tools that simulate DOM-based attacks is essential for identifying these client-side flaws before deployment in production environments.