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How CVE-2025-46866 Works
CVE-2025-46866 is a stored Cross-Site Scripting (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, which are then stored in the database. When other users access pages containing the compromised field, the script executes in their browser, potentially leading to session hijacking, data theft, or unauthorized actions. The attack persists until the malicious payload is manually removed or patched.
DailyCVE Form
Platform: Adobe Experience Manager
Version: ≤ 6.5.22
Vulnerability: Stored XSS
Severity: Critical
Date: 06/12/2025
Prediction: Patch expected by 07/15/2025
What Undercode Say:
Exploitation Analysis
1. Exploit Code (PoC):
<script>alert(document.cookie)</script>
Inserted into vulnerable AEM form fields (e.g., text components).
2. Manual Verification:
curl -X POST "https://[bash]/content/forms/af/xss.html" -d "input=<script>alert(1)</script>"
3. Automated Scanning:
nuclei -t xss -u https://[bash] -severity critical
Mitigation Commands
1. Immediate Workaround:
Sanitize input via AEM filters /etc/acs-commons/xss-protection.json
2. WAF Rule (ModSecurity):
SecRule ARGS "@detectXSS" "id:1000,deny,status:403"
3. Patch Verification:
aem --version | grep 6.5.23
Post-Exploit Detection
1. Log Analysis:
grep -r "script>" /var/log/aem/error.log
2. AEM Query for Malicious Nodes:
SELECT FROM [nt:base] WHERE CONTAINS(, '<script>')
3. Scheduled Cleanup:
python3 aem_cleaner.py --path /content/dam --filter xss
Developer Fix (Java Sling Filter):
@SlingFilter(scope = FilterScope.REQUEST)
public class XSSFilter implements Filter {
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) {
String input = req.getParameter("text");
if (input.matches(".<script.")) {
throw new SecurityException("XSS Attempt");
}
chain.doFilter(req, res);
}
}
Threat Intelligence Feeds
Monitor Adobe APSB-2025-XX wget https://helpx.adobe.com/security/products/aem/apsb25-XX.html
Predicted Attack Vectors
- Phishing via XSS-delivered fake login forms.
- Cookie theft targeting AEM administrators.
- CSRF escalation via injected JavaScript.
No additional commentary beyond the provided rules.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
