CVE-2025-46955
📋 TL;DR
A stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager allows low-privileged attackers to inject malicious JavaScript into vulnerable form fields. When victims browse pages containing the compromised fields, their browsers execute the attacker's scripts. This affects AEM versions 6.5.22 and earlier.
💻 Affected Systems
- Adobe Experience Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware via drive-by downloads.
Likely Case
Session hijacking, credential theft, defacement of web pages, or data exfiltration from user browsers.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires authenticated low-privileged access; stored XSS typically has straightforward exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.23 or later
Vendor Advisory: https://helpx.adobe.com/security/products/experience-manager/apsb25-48.html
Restart Required: Yes
Instructions:
1. Backup your AEM instance. 2. Apply the latest AEM Service Pack (6.5.23+). 3. Restart the AEM service. 4. Verify the update via the AEM welcome screen or OSGi console.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution from untrusted sources.
Add 'Content-Security-Policy' header in web server configuration or AEM dispatcher.
Input Validation Filter
allDeploy custom servlet filters to sanitize user input in form fields.
Implement and deploy a custom XSS filter in AEM's OSGi configuration.
🧯 If You Can't Patch
- Restrict low-privileged user access to vulnerable form fields via AEM permissions.
- Monitor and audit user submissions in form fields for suspicious script patterns.
🔍 How to Verify
Check if Vulnerable:
Check AEM version via the welcome screen (http://<host>:<port>/welcome.html) or OSGi console; versions 6.5.22 or earlier are vulnerable.Check Version:
curl -s http://<host>:<port>/system/console/status-productinfo | grep 'Adobe Experience Manager'Verify Fix Applied:
Confirm version is 6.5.23 or later and test form fields with safe XSS payloads to ensure sanitization.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to form endpoints with script tags or JavaScript payloads in parameters.
- Error logs showing blocked script execution if CSP is enabled.
Network Indicators:
- HTTP requests containing script injection patterns in form data.
- Outbound connections to suspicious domains from user browsers after visiting AEM pages.
SIEM Query:
source="aem_access.log" AND (method="POST" AND uri="/content/forms/af/*" AND (body="<script>" OR body="javascript:"))