🛡️ Sentinel: Fix JavaScript Injection in CanvasController - #2
🛡️ Sentinel: Fix JavaScript Injection in CanvasController#2google-labs-jules[bot] wants to merge 1 commit into
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🚨 Severity: CRITICAL 💡 Vulnerability: JavaScript Injection (XSS equivalent in WebView) User input from the search bar was directly interpolated into a JavaScript string executed by the WebView. This allowed arbitrary JavaScript execution if the input contained special characters (e.g., single quotes). 🎯 Impact: Attackers could execute malicious JavaScript within the app's context. 🔧 Fix: - Used `JSONSerialization` to safely encode the user input as a JSON string. - Refactored the `evaluateJavaScript` call to pass the encoded data as a variable (`args`), ensuring it is treated as data, not code. ✅ Verification: - Verified that the new code constructs a valid JSON string and passes it safely to the JavaScript function `changeCharacter`.
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This PR fixes a critical JavaScript injection vulnerability in
CanvasController.swift.Previously, user input was directly interpolated into a JavaScript function call:
This allowed an attacker to break out of the string literal using single quotes.
The fix utilizes
JSONSerializationto properly escape the input string and passes it as a variable to the JavaScript context, eliminating the injection risk:This PR also adds the Sentinel Journal entry describing the vulnerability.
PR created automatically by Jules for task 8759586791768783797 started by @tsainez