Listen to this Post
This vulnerability is a client‑side, DOM‑based Cross‑Site Scripting (XSS) flaw affecting Adobe Experience Manager versions 6.5.24, LTS SP1, 2026.04 and earlier. Unlike traditional reflected or stored XSS, the malicious payload never reaches the server; instead, it is injected directly into the Document Object Model (DOM) of a victim’s browser through unsanitised client‑side JavaScript code. An attacker can craft a webpage that, when visited by an authenticated AEM user, manipulates DOM elements by modifying parameters or attributes that are later processed by JavaScript without proper validation. This allows the attacker to execute arbitrary JavaScript in the context of the victim’s session. Because the attack occurs entirely on the client side, it bypasses traditional server‑side input filters and web application firewalls that inspect HTTP traffic.
Exploitation requires user interaction – the victim must click on a specially crafted link or be tricked into visiting a malicious webpage. The CVSS vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) reflects a medium severity (5.4) with a changed scope, low confidentiality and integrity impact, and no effect on availability. The “changed scope” indicates that the vulnerability may affect resources beyond the vulnerable component, potentially allowing the attacker to access higher‑privileged functions within the AEM platform.
DailyCVE Form:
Platform: Adobe Experience Manager
Version: 6.5.24, LTS SP1, ≤2026.04
Vulnerability : DOM‑based XSS
Severity: 5.4 MEDIUM
date: June 9, 2026
Prediction: June 10, 2026
What Undercode Say:
Check current version in a running AEM instance
curl -u admin:password http://localhost:4502/libs/granite/core/content/login.html
Simulate the vulnerable DOM sink (e.g., unsafe eval of location.hash)
echo "javascript:alert('CVE-2026-47983')" | base64
Monitor Adobe’s advisory for further indicators of compromise
curl -s https://helpx.adobe.com/security/products/experience-manager/apsb26-56.html | grep -i "CVE-2026-47983"
Exploit:
A practical exploit would involve crafting a URL that contains a malicious JavaScript payload in a fragment identifier (“). If the AEM application uses `document.location.hash` unsafely with `innerHTML` or eval, the payload executes in the victim’s context. Below is a proof‑of‑concept:
<!DOCTYPE html>
<html>
<head><>CVE-2026-47983 PoC</></head>
<body>
<h2>DOM XSS via location.hash</h2>
<div id="output"></div>
<script>
// Vulnerable pattern: take URL fragment and inject directly
var hash = document.location.hash.substring(1);
document.getElementById('output').innerHTML = hash;
</script>
</body>
</html>
When a user accesses http://vulnerable-aem-site/page.html<img src=x onerror=alert(1)>, the payload executes. An attacker would encode this into a link and distribute it via email or social engineering to authenticated AEM users.
Protection:
- Upgrade immediately to AEM Cloud Service Release 2026.05, 6.5 LTS Service Pack 2, or 6.5 Service Pack 25.
- Apply a Content Security Policy (CSP) that restricts `script-src` and disables
unsafe-eval. - Use DOM sanitisation libraries such as DOMPurify on all user‑controlled data before DOM insertion.
- Implement Subresource Integrity (SRI) for all externally loaded scripts.
- Conduct regular static and dynamic analysis of client‑side JavaScript that processes
document.location,location.hash, anddocument.referrer.
Impact:
Successful exploitation allows an attacker to execute arbitrary JavaScript within the victim’s browser session, leading to:
– Session hijacking – stealing session cookies and impersonating the victim.
– Phishing attacks – injecting fake login forms or redirecting to malicious sites.
– Data exfiltration – reading sensitive content rendered in the page.
– Privilege escalation – performing actions on behalf of the user, such as creating admin accounts or modifying configurations.
🎯Let’s Practice Exploiting & Learn Patching For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
