CVE-2026-75710 in Experience Manager as a Cloud Service
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, which fundamentally alters the traditional scope of attack by shifting responsibility from server-side input validation to browser-side script execution dynamics. This specific weakness arises because the application fails to adequately sanitize or validate user-supplied data before it is processed and rendered within the DOM environment. Unlike stored XSS where malicious scripts are permanently embedded in target servers, this vulnerability relies on dynamic manipulation of the page structure during runtime, allowing an attacker to inject executable JavaScript code that interacts directly with the browser's internal objects and properties rather than just static HTML content.
The technical mechanism behind this exploitation involves the application accepting input parameters or data streams from external sources such as URL fragments, query strings, or postMessage events without applying rigorous encoding rules. When a victim visits a specially crafted webpage designed to trigger these specific DOM manipulation vectors, the browser interprets the injected script as legitimate code belonging to the Adobe Experience Manager domain. This results in the execution of arbitrary JavaScript within the security context of the trusted site, effectively bypassing same-origin policy protections that are typically designed to isolate content from different origins. The attacker can thus read sensitive cookies, session tokens, or local storage data associated with the user's active session on the platform.
From an operational perspective, this vulnerability poses a significant risk because it requires direct user interaction for successful exploitation, specifically necessitating that the victim visits a maliciously constructed webpage controlled by the adversary. This social engineering component means that while the technical flaw is severe, its practical application depends heavily on phishing tactics or drive-by download scenarios where users are tricked into accessing compromised links. Once executed, the malicious script can perform actions such as session hijacking, credential theft, defacement of the user interface, or even pivoting to further attacks within the internal network if the victim has elevated privileges within Adobe Experience Manager. The change in scope indicates that this is not merely a data leakage issue but potentially an arbitrary code execution vector on the client side, which can lead to complete compromise of the end-user's session and identity.
To mitigate these risks, organizations must implement strict Content Security Policy directives that restrict inline script execution and define allowed sources for dynamic content loading. Developers should also adopt secure coding practices such as context-aware encoding when rendering user input into DOM elements and utilize modern JavaScript frameworks that automatically escape data by default to prevent injection attacks. Additionally, deploying browser-based security tools like Web Application Firewalls with client-side detection capabilities can help identify and block anomalous script execution patterns associated with DOM XSS attempts. Regular security audits focusing on front-end code paths and third-party library vulnerabilities are essential to maintaining the integrity of Adobe Experience Manager deployments against evolving cross-site scripting techniques aligned with MITRE ATT&CK tactics such as Initial Access via Spearphishing Link and Execution via Client-side Scripting.