CVE-2026-27241 is a stored Cross-Site Scripting (XSS) vulnerability identified in Adobe Experience Manager (AEM), a widely used enterprise content management system. The vulnerability exists in versions 6.5.23 and earlier, where certain form fields do not properly sanitize user input, allowing a low-privileged attacker to inject malicious JavaScript code that is stored persistently on the server. When legitimate users access pages containing these vulnerable fields, the malicious script executes in their browsers within the security context of the affected site. This can lead to theft of session cookies, user impersonation, or unauthorized actions performed on behalf of the victim. The vulnerability requires the attacker to have some level of privilege to submit malicious input and relies on user interaction to trigger the script execution. The CVSS 3.1 base score of 5.4 reflects a network attack vector with low attack complexity but requiring privileges and user interaction, impacting confidentiality and integrity but not availability. No public exploit code or active exploitation has been reported as of now. The vulnerability is classified under CWE-79, which covers improper neutralization of input leading to XSS. Adobe has not yet published a patch or mitigation guidance, so organizations must monitor for updates and consider interim controls. Given AEM’s role in managing web content, exploitation could compromise sensitive data and user trust.

The primary impact of this vulnerability is on the confidentiality and integrity of data processed or displayed by Adobe Experience Manager. Successful exploitation could allow attackers to execute arbitrary JavaScript in the context of the affected web application, enabling session hijacking, credential theft, or unauthorized actions performed on behalf of users. This can lead to data breaches, defacement of websites, or further pivoting into internal networks if administrative users are targeted. Since AEM is used by many large enterprises and government agencies for critical web content management, exploitation could disrupt business operations, damage reputation, and result in regulatory penalties. The requirement for low privileges and user interaction limits the ease of exploitation but does not eliminate risk, especially in environments with many users or where attackers can lure victims to vulnerable pages. The absence of known exploits in the wild currently reduces immediate risk but does not preclude future attacks once exploit code becomes available.

Organizations should immediately inventory their Adobe Experience Manager deployments to identify affected versions (6.5.23 and earlier). Until Adobe releases an official patch, administrators should implement strict input validation and output encoding on all form fields to prevent injection of malicious scripts. Employ Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce XSS impact. Limit user privileges to the minimum necessary to reduce the ability of attackers to inject malicious content. Monitor web application logs for unusual input patterns or repeated form submissions that could indicate attempted exploitation. Educate users about the risks of clicking unknown links or interacting with suspicious content. Regularly check Adobe security advisories for updates and apply patches promptly once available. Consider deploying web application firewalls (WAFs) with rules targeting XSS payloads as an interim protective measure. Conduct security testing and code reviews focused on input sanitization and output encoding in custom AEM components.