🛡️ Sentinel: [HIGH] Fix XSS vulnerability in WebView OCR injection#139
🛡️ Sentinel: [HIGH] Fix XSS vulnerability in WebView OCR injection#139TargetMisser wants to merge 1 commit intomainfrom
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Replaced unsafe string interpolation inside injectJavaScript with a proper postMessage communication channel in HomeScreen and ShiftScreen, adding a READY handshake to safely transfer user-uploaded image base64 arrays to the OCR engine. Co-authored-by: TargetMisser <52361977+TargetMisser@users.noreply.github.com>
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🚨 Severity: HIGH
💡 Vulnerability: Cross-Site Scripting (XSS) via
injectJavaScriptusing unsanitized string interpolation for image base64 payloads within React Native WebViews.🎯 Impact: Attackers or malformed file outputs could inject arbitrary JavaScript code into the WebView execution context if quotes were not properly escaped, risking data exposure or crashes.
🔧 Fix: Replaced
injectJavaScriptstring interpolation with a securepostMessagearchitecture. Sent serialized payloads throughwebViewRef.current.postMessageand set up matchingmessageevent listeners within the WebViewengineHtmlpayload to handle data securely.✅ Verification: Ran
npm run typecheckandnpx jest --passWithNoTestssuccessfully, verified absence ofinjectJavaScriptvulnerabilities insrc/screens/HomeScreen.tsxandsrc/screens/ShiftScreen.tsx.PR created automatically by Jules for task 4993197564337671734 started by @TargetMisser