CVE-2026-75718 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 client-side vulnerability classified as a Document Object Model based Cross-Site Scripting flaw, which allows an attacker to inject and execute malicious JavaScript code within the context of a victim's web browser. This specific type of vulnerability arises when an application accepts untrusted data from sources such as URL parameters or form inputs and writes it directly into the DOM without proper validation or encoding. The core technical failure lies in the lack of adequate sanitization mechanisms that would otherwise neutralize special characters or script tags before they are processed by the browser's rendering engine, thereby permitting arbitrary code execution under the security privileges of the current user session.
The operational impact of this vulnerability is significant because it enables attackers to bypass same-origin policy restrictions and perform actions on behalf of the victim within the application environment. By manipulating the DOM structure through a crafted webpage or link, an attacker can steal sensitive cookies, capture authentication tokens, hijack active sessions, deface web pages, or redirect users to malicious sites designed for phishing attacks. Since exploitation requires user interaction, such as clicking a specially constructed URL that leads to a compromised page containing the exploit payload, the attack vector relies heavily on social engineering tactics to trick the victim into initiating the execution of the malicious script within their browser context.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific mechanism falls under sub-category 1A where input is written to the DOM without validation or encoding. In terms of offensive security frameworks, this activity corresponds to ATT&CK technique T1059, specifically Command and Scripting Interpretation via JavaScript, which allows attackers to execute commands within the browser environment to achieve further objectives such as data exfiltration or lateral movement if combined with other vulnerabilities in a broader attack chain.
To mitigate this risk, developers must implement strict input validation and output encoding strategies that ensure all user-supplied data is treated as untrusted until proven otherwise. Utilizing Content Security Policy headers can significantly reduce the impact by restricting the sources from which scripts are allowed to load or execute. Additionally, employing modern web frameworks that automatically escape content when rendering it into the DOM can prevent many instances of this vulnerability type. Regular security testing and code reviews focusing on how data flows through client-side applications will help identify and remediate these flaws before they can be exploited in production environments.