CVE-2026-48257 in Experience Manager
Summary
by MITRE • 07/14/2026
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 • 07/15/2026
Adobe Experience Manager contains a dom-based cross-site scripting vulnerability that allows attackers to inject malicious javascript code into the victim's browser environment through manipulation of the document object model. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws where input data is improperly sanitized before being rendered in web pages. The attack vector requires user interaction as victims must navigate to a specially crafted webpage that contains the malicious payload, making this a client-side exploitation scenario rather than a server-side vulnerability.
The technical flaw occurs when the application fails to properly validate or sanitize user-supplied input that gets processed within the browser's dom environment. When a victim visits the malicious page, the crafted javascript code executes in the context of the victim's browser session, potentially allowing attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to phishing sites. The vulnerability specifically affects how the application handles dynamic content manipulation and parameter processing within the client-side javascript environment.
The operational impact of this vulnerability extends beyond simple data theft as it can enable complete compromise of user sessions and potentially lead to privilege escalation within the AEM environment. Attackers can leverage this vulnerability to perform actions such as accessing restricted content, modifying user permissions, or executing commands with the privileges of authenticated users. The scope change mentioned in the description indicates that this vulnerability may affect a broader range of functionality than initially reported, potentially impacting multiple components within the AEM platform.
Mitigation strategies should include implementing strict input validation and output encoding for all user-supplied data processed by client-side javascript functions. Organizations should deploy content security policies to restrict script execution and implement proper sanitization of dom manipulation functions. The vulnerability aligns with ATT&CK technique T1059.007 which covers scripting through webshell commands, and organizations should consider implementing web application firewalls to detect and block suspicious javascript payloads. Regular security assessments and code reviews focusing on client-side input handling are essential to prevent similar vulnerabilities in the future.