CVE-2026-75670 in Experience Manager as a Cloud Service
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 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 accepting user-controllable input and passing it directly to a sink function that can execute scripts, such as innerHTML, outerHTML, or eval, without adequate sanitization or validation. In this specific instance affecting Adobe Experience Manager, the vulnerability allows an attacker to inject malicious JavaScript payloads into the DOM environment, effectively hijacking the execution context of the victim's browser session.
The operational impact of exploiting this vulnerability is significant because it enables attackers to bypass same-origin policy restrictions and perform actions on behalf of the authenticated user within the application. Since Adobe Experience Manager often serves as a central hub for enterprise content management with administrative privileges or access to sensitive business data, successful exploitation can lead to complete account takeover, session hijacking, credential theft via keyloggers, defacement of web pages, or redirection to malicious sites designed to phish further credentials. The scope change noted in the vulnerability description indicates that the impact may extend beyond a single user's isolated context, potentially affecting broader organizational assets if administrative functions are compromised through this vector.
Exploitation requires active user interaction because modern browsers enforce strict security models that prevent arbitrary script execution from external sources without explicit triggers. An attacker must craft a malicious webpage or lure a victim to click on a specially constructed link containing the exploit payload in the URL parameters or form data. When the victim visits this crafted page, their browser loads Adobe Experience Manager components which then process the untrusted input and execute the injected script within the trusted domain context of the application. This reliance on user interaction does not diminish the severity but rather dictates the attack vector as social engineering-driven phishing campaigns targeting employees with access to the platform.
From a standards perspective, this vulnerability aligns closely with CWE-79 Improper Neutralization of Input During Web Page Generation known as Cross-site Scripting and specifically falls under subcategories related to DOM-based XSS such as CWE-813 or CWE-20 depending on whether input validation is entirely absent or insufficiently enforced. In terms of the MITRE ATT&CK framework, this exploit maps directly to Tactic TA0005 Defense Evasion and Technique T1189 Drive-by Client Compilation if automated via a landing page, or more commonly T1059 Command and Scripting Interpreter through JavaScript execution within the browser environment. It also relates to T1203 Exploitation for Credential Access if used to steal session cookies or tokens stored in local storage or cookies accessible by the injected script.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary technical fix involves implementing strict input validation and output encoding specifically tailored for DOM sinks, ensuring that any user-supplied data is sanitized before being processed by dangerous JavaScript functions. Developers should utilize context-aware escaping libraries rather than ad-hoc string manipulation to prevent injection attacks. Additionally, enabling Content Security Policy headers can significantly reduce the impact of successful XSS attempts by restricting the sources from which scripts can be loaded and executed, thereby preventing inline script execution unless explicitly whitelisted. Adobe has released patches for this vulnerability in recent updates, so administrators should immediately apply the latest security fixes to their instances. Beyond patching, organizations should conduct regular code reviews focusing on client-side JavaScript logic and employ automated static application security testing tools configured to detect DOM-based XSS patterns during the development lifecycle to prevent recurrence.