CVE-2026-106630 in Experience Manager
Summary
by MITRE • 10/13/2026
Adobe Experience Manager is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session. Scope is changed.
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Analysis
by VulDB Data Team • 10/13/2026
Adobe Experience Manager contains a stored Cross-Site Scripting vulnerability within its form handling components that allows attackers to inject malicious JavaScript code into persistent data fields. Unlike reflected XSS where the payload is delivered via a URL, this flaw resides in how the application processes and subsequently renders user-supplied input without adequate sanitization or encoding. When an attacker submits a crafted script through these vulnerable forms, the content is stored on the server side rather than being immediately executed. This persistence means that every time a legitimate user accesses the affected page containing the compromised field, their browser will parse and execute the injected code as if it were part of the original trusted application logic.
The technical mechanism involves insufficient validation of input data before storage and subsequent rendering in an HTML context. The vulnerability arises because the system fails to properly neutralize special characters that have meaning in JavaScript or HTML environments. Consequently, when a victim navigates to a page displaying this stored content, the browser interprets the malicious script as executable code. This execution occurs within the security context of the Adobe Experience Manager domain, granting the attacker access to sensitive cookies, session tokens, and other credentials associated with that domain due to same-origin policy constraints being bypassed by the trusted origin status.
The operational impact of this vulnerability is severe because it facilitates account takeover and unauthorized administrative actions without requiring physical proximity or direct interaction beyond initial submission. An attacker can steal authentication sessions, leading to full compromise of user accounts ranging from standard editors to administrators with elevated privileges. Furthermore, the malicious script can perform actions on behalf of the victim, such as modifying content settings, creating new users, or exfiltrating sensitive enterprise data stored within the platform. This capability effectively turns a trusted application into an attack vector against its own legitimate users and infrastructure integrity.
This flaw aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting in industry standards. From a tactical perspective, it maps to ATT&CK technique T1059 Command and Scripting Interpreter specifically JavaScript execution within the context of browser-based attacks. The persistence aspect also relates to techniques involving stored payloads that remain active until manually removed or expired by system policies.
Mitigation strategies should focus on implementing strict input validation and output encoding at both the application layer and infrastructure level. Developers must ensure that all user-supplied data is encoded according to its context before being rendered in HTML, JavaScript, CSS, or URL parameters. Utilizing Content Security Policy headers can significantly reduce the impact by restricting where scripts are allowed to load from and preventing inline script execution. Additionally, deploying Web Application Firewalls with specific rules for detecting XSS patterns provides an additional layer of defense against exploitation attempts while patches are being applied. Regular security audits and code reviews focusing on form handling logic are essential to prevent recurrence of such input validation failures in enterprise content management systems.