CVE-2026-106632 in Experience Manager
Summary
by MITRE • 10/13/2026
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 • 10/13/2026
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 structure by JavaScript code running within the page itself. The root cause lies in the application's failure to properly sanitize user-supplied input before it is processed and rendered into the DOM environment. When an attacker crafts a specific webpage containing malicious payloads, they can exploit this lack of validation to inject executable scripts that interact directly with the browser's internal objects. This architectural weakness allows attackers to bypass standard server-side security controls because the injection point exists entirely within the client-side execution context rather than in the data transmitted from the server.
The operational impact of this vulnerability is significant, as it enables an attacker to execute arbitrary JavaScript code within the security context of the victim's browser session for Adobe Experience Manager. Since the script runs with the same privileges as legitimate application scripts, the attacker can access sensitive cookies, local storage tokens, and other authentication credentials stored by the web application. This capability facilitates account takeover attacks where the adversary impersonates a valid user to perform unauthorized actions such as modifying content, stealing personal data, or defacing the website interface. Furthermore, because exploitation requires the victim to visit a crafted webpage, this is classified as an active attack vector that relies on social engineering tactics to lure users into triggering the malicious code. The scope change indicates that the impact may extend beyond simple session hijacking to potentially affect other domains if cross-domain scripting techniques are employed or if sensitive data from adjacent applications is accessible through shared browser storage mechanisms.
From a standards perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation known as Cross-site Scripting. Specifically, it falls under the sub-category of DOM-based XSS where the sink involves unsafe JavaScript methods that write data to the document without adequate encoding or validation. In terms of offensive security frameworks, this exploit maps directly to MITRE ATT&CK technique T1059, Command and Scripting Interpreter, specifically within the context of client-side execution via browser environments like JavaScript. The attack vector corresponds to TA0001 Initial Access as it requires user interaction to gain a foothold in the system through deceptive web content. Understanding these mappings helps security teams prioritize remediation efforts based on established industry benchmarks for vulnerability classification and risk assessment.
To mitigate this vulnerability, developers must implement strict input validation and output encoding strategies that apply consistently across all client-side JavaScript operations involving dynamic DOM manipulation. It is essential to avoid using dangerous APIs such as innerHTML, outerHTML, or document.write with unsanitized user data. Instead, secure alternatives like textContent should be utilized when inserting plain text into the page structure. Additionally, implementing a Content Security Policy (CSP) can significantly reduce the impact of successful XSS attacks by restricting the sources from which scripts are allowed to load and execute. Regular security code reviews focusing on client-side logic and automated static analysis tools configured for DOM-based vulnerability detection should be integrated into the development lifecycle to identify similar patterns before deployment. For end-users, maintaining updated browser versions with modern security features enabled provides an additional layer of defense against such exploitation attempts.