CVE-2026-75741 in Experience Manager as a Cloud Service
Summary
by MITRE • 09/09/2026
Adobe Experience Manager is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged 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. Scope is changed.
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Analysis
by VulDB Data Team • 09/09/2026
Adobe Experience Manager contains a stored Cross-Site Scripting vulnerability within its form handling components, which allows attackers with low-privileged access levels to inject malicious client-side scripts into persistent data fields. Unlike reflected XSS where the payload is delivered via a crafted link or URL parameter, this flaw resides in how the application processes and subsequently renders user-supplied input that has been saved to the backend storage system. The vulnerability arises because the application fails to adequately sanitize or encode special characters within form inputs before storing them, thereby allowing arbitrary JavaScript code to be embedded directly into the database records associated with specific forms or content items.
The operational impact of this flaw is significant because it enables a persistent attack vector that does not require social engineering tactics such as phishing links to trigger execution. Once an attacker successfully injects the malicious script through a vulnerable form field, the payload becomes part of the application's stored data. Consequently, any user with sufficient privileges to view or interact with the affected content will have their browser execute the injected JavaScript in the context of the Adobe Experience Manager domain. This persistence means that even if the initial injection point is patched, previously stored malicious payloads may continue to affect users until they are manually removed from the database, creating a long-term security risk for the organization's internal or external-facing portals.
From an industry standards perspective, this vulnerability aligns with CWE-79, which classifies Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific nature of storing unsanitized input maps directly to CWE-80, a sub-category focusing on stored XSS scenarios where the malicious script is permanently saved within target servers. In terms of offensive security frameworks, this behavior corresponds to the MITRE ATT&CK technique T1059.007, which covers JavaScript execution as an endpoint command and control or data exfiltration method. The ability for a low-privileged user to execute arbitrary code effectively escalates their impact from simple content modification to potential session hijacking, credential theft via keylogging scripts, or defacement of the application interface depending on what the injected payload is designed to do.
Mitigation strategies must focus on both immediate remediation and long-term defensive coding practices. Administrators should immediately apply the latest security patches provided by Adobe for their specific version of Experience Manager, as these updates typically include enhanced input validation logic within the form processing modules. For environments where patching cannot be applied instantly, implementing a Web Application Firewall with rules capable of detecting and blocking common XSS payloads in POST requests targeting form endpoints can provide temporary protection. Furthermore, developers must enforce strict output encoding on all data rendered to web pages, ensuring that special characters are converted into their corresponding HTML entities before display. Adopting Content Security Policy headers can also mitigate the impact by restricting the sources from which scripts can be loaded and executed, thereby neutralizing many injected payloads even if they bypass input validation filters.