CVE-2026-48263
Summary
by MITRE • 07/14/2026
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 • 07/14/2026
Adobe Experience Manager contains a stored cross-site scripting vulnerability that represents a critical security risk for organizations relying on this content management platform. This vulnerability falls under CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before it is rendered in web pages. The flaw exists within the form handling mechanisms of AEM where user-supplied data is not adequately validated or escaped before being stored and subsequently displayed to other users. Low-privileged attackers can exploit this weakness by submitting malicious JavaScript code through vulnerable form fields, which then gets stored server-side and executed whenever legitimate users view the affected content. The attack vector specifically targets the stored nature of the vulnerability, meaning that once the malicious payload is injected, it persists and affects all users who interact with the compromised form data.
The operational impact of this vulnerability extends beyond simple script execution as it creates a persistent backdoor for attackers to perform various malicious activities within the victim's browser context. According to ATT&CK framework category T1531 - Account Access Through Social Engineering, this vulnerability enables attackers to establish persistent access through user interaction with compromised content, while T1203 - Exploitation for Client Execution allows for arbitrary code execution in the victim's browser environment. The stored nature of this XSS flaw means that attackers can craft sophisticated payloads that may include credential theft mechanisms, session hijacking scripts, or redirection to malicious domains. When victims browse pages containing the vulnerable form fields, their browsers execute the injected JavaScript without any additional user interaction, making this a particularly dangerous vulnerability for organizations with extensive AEM deployments. The scope of impact includes not only the immediate execution environment but also potential data exfiltration and further exploitation of other vulnerabilities within the same user session.
Organizations must implement comprehensive mitigation strategies to address this stored XSS vulnerability in their Adobe Experience Manager environments. Immediate remediation should focus on applying the latest security patches provided by Adobe, as these updates typically contain proper input validation and output encoding mechanisms that prevent malicious scripts from being stored and executed. Additionally, organizations should implement strict input validation policies that enforce proper sanitization of all user-supplied data before storage, utilizing libraries such as OWASP Java HTML Sanitizer or similar tools to neutralize potentially dangerous characters. Network-level protections including web application firewalls should be configured to detect and block suspicious script patterns in form submissions. Regular security assessments and penetration testing should verify that input handling mechanisms are properly implemented throughout the AEM platform. The implementation of Content Security Policy headers can provide an additional layer of defense by restricting script execution sources, while proper access controls should limit which users can submit content to prevent unauthorized exploitation of this vulnerability across different user privileges levels within the system.