Individual skill
mobile-webview
Exploit insecure mobile WebViews — JS-bridge abuse, file access, and XSS→native. Load when an app renders web content in a WebView/WKWebView, exposes a JS bridge, or loads attacker-influenced URLs. Signals: addJavascriptInterface, WKScriptMessageHandler, loadUrl, file:// access, deep-link → WebView.
skills/mobile/mobile-webview/SKILL.md
Source commit ee0e0c50d2f6d941a14b73dd85a2b470d0ab976e
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- Observed behavior
- Not checked yet
- Last checked
- Nov 7, 2026
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- Repository stars (not skill ratings)
- 27
- Repository last updated
- Oct 14, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent-skills Repository topic
- ai-agents Repository topic
- ai-security Repository topic
- application-security Repository topic
- blue-team Repository topic
- bug-bounty Repository topic
- claude-code Repository topic
- codex Repository topic
- detection-engineering Repository topic
- gemini Repository topic
- writing Derived category
- security Derived category
- security-application Derived category
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SKILL.mdcore · 2,498 bytes
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# Mobile WebView abuse
## When it applies
The app shows web content in a WebView (Android `WebView` / iOS `WKWebView`) and either exposes a
native JS bridge or loads URLs/content an attacker can influence (deep link, param, MITM'd http).
## Why it works
WebViews blur the web/native boundary. A JS bridge (`addJavascriptInterface` /
`WKScriptMessageHandler`) lets page JavaScript call native code — so XSS or a malicious loaded page
can invoke native functionality. Misconfig (`setAllowFileAccess`, `setJavaScriptEnabled`, mixed
content) widens it to local file theft.
## Method
1. **Find the WebView config** in `jadx`/class-dump: `setJavaScriptEnabled(true)`,