Stored XSS in Adobe Experience Manager

Executive Summary

Adobe Experience Manager has a stored Cross-Site Scripting (XSS) vulnerability. A low-privileged attacker can inject malicious scripts into vulnerable form fields. When a victim visits the affected page, the malicious JavaScript executes in their browser.

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Detection Guidance

Detecting this stored XSS vulnerability requires manual inspection of Adobe Experience Manager form fields. Check input fields in forms for improper input validation. Look for fields that reflect user input without sanitization. Use browser developer tools to inspect form fields and submitted data. Test with basic XSS payloads like <script>alert(1)</script> in form inputs.

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Impact Analysis

This vulnerability allows attackers to execute malicious scripts in your browser when you visit a page with the vulnerable form field. This could lead to theft of session cookies, account takeover, or unauthorized actions on your behalf.

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Mitigation Strategies

Apply Adobe's official security patches immediately. Enable input validation and output encoding for all form fields. Implement Content Security Policy (CSP) headers to mitigate XSS impact. Restrict low-privileged user permissions to reduce attack surface. Monitor form submissions for suspicious activity or unexpected JavaScript code.

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