CVE-2026-75644 in Experience Manager
Summary
by MITRE • 09/08/2026
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 that allows attackers with low privileges to inject malicious script code directly into application data stores through form fields. Unlike reflected XSS where payloads are delivered via URLs, this flaw persists on the server side because the injected content is saved and subsequently served back to users without proper sanitization or encoding. This architectural characteristic means that a single successful injection can compromise every user who views the affected page, significantly expanding the attack surface beyond the initial point of entry. The vulnerability stems from insufficient validation mechanisms within the form processing logic, which fails to neutralize special characters such as angle brackets and quotation marks before rendering them in HTML contexts.
The operational impact of this flaw is severe because it enables persistent data manipulation and session hijacking scenarios. When a victim with higher privileges or administrative rights accesses a page containing the compromised field, their browser executes the embedded JavaScript within the context of the Adobe Experience Manager domain. This allows the attacker to steal sensitive cookies, capture authentication tokens, perform actions on behalf of the user, or redirect traffic to malicious sites. The shift in scope from transient execution to persistent storage amplifies the risk profile considerably, as remediation requires not only patching the software but also auditing and cleaning existing data entries that may already contain injected payloads.
From a classification perspective, this vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. Specifically it falls under stored XSS where malicious scripts are permanently stored within target servers such as databases or message boards. In terms of adversary tactics the behavior corresponds to ATT&CK technique T1059 Command and Control Execution via Browser-based scripting which facilitates lateral movement and data exfiltration in enterprise environments. The ability for low-privileged users to execute arbitrary code highlights a critical failure in access control validation during input processing phases.
Mitigation strategies must address both immediate remediation and long-term prevention. Organizations should apply the latest security patches provided by Adobe immediately to close the specific flaw in form handling routines. Additionally developers must implement strict output encoding for all dynamic content rendered in HTML contexts ensuring that special characters are converted into safe entities before display. Input validation should be enforced at multiple layers including client-side checks and robust server-side sanitization rules that reject or escape potentially dangerous script tags event handlers and javascript URIs. Regular security audits of form submissions and database entries can help identify any residual malicious content introduced prior to the patch application ensuring complete remediation of the stored payload risk.