Adobe Experience Manager, Stored Cross-Site Scripting (XSS), CVE-2025-46860 (Critical)

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How CVE-2025-46860 Works

CVE-2025-46860 is a stored XSS vulnerability in Adobe Experience Manager (AEM) versions 6.5.22 and earlier. Attackers with low privileges can inject malicious JavaScript into vulnerable form fields, such as text inputs or rich text editors, due to insufficient input sanitization. When a victim accesses a page containing the compromised field, the script executes in their browser, enabling session hijacking, phishing, or malware delivery. The attack persists server-side, affecting all users who view the manipulated content.

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Platform: Adobe Experience Manager
Version: ≤ 6.5.22
Vulnerability: Stored XSS
Severity: Critical
Date: 06/12/2025

Prediction: Patch by 07/15/2025

What Undercode Say:

Exploitation

1. Identify Vulnerable Fields:

<script>alert(document.cookie)</script>

Test form submissions for unsanitized inputs.

2. Craft Malicious Payload:

<img src=x onerror=stealCookies()>

3. Deliver via Form:

Submit payload to AEM’s content authoring interface.

Protection

1. Input Sanitization:

// Java example using OWASP ESAPI
ESAPI.encoder().encodeForHTML(userInput);

2. Content Security Policy (CSP):

Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'

3. Patch Verification:

aemcli --version | grep "6.5.23"

4. WAF Rules:

location / {
modsecurity_rules 'SecRule ARGS "@detectXSS" deny';
}

5. Log Monitoring:

tail -f /var/log/aem/error.log | grep "XSS"

6. Disable Risky Components:

<!-- Disable rich text editor XSS vectors -->
<config disableHtmlInjection="true"/>

7. Browser Mitigations:

// Enable Trusted Types in Chrome
if (window.trustedTypes) {
trustedTypes.createPolicy('default', { createHTML: sanitize });
}

8. AEM-Specific Fixes:

curl -X PATCH https://aem-instance/libs/cq/security/content.json -d '{"xssFilters":"strict"}'

9. Exploit Detection:

Python regex for XSS detection
import re
xss_pattern = re.compile(r'<script.?>|onerror=|javascript:', re.IGNORECASE)

10. Emergency Workaround:

Block suspicious user agents
RewriteCond %{HTTP_USER_AGENT} "<script>" [bash]
RewriteRule ^ - [bash]

Sources:

Reported By: nvd.nist.gov
Extra Source Hub:
Undercode

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