February 26, 2026
Webview wizardry or RCE roulette?
Hacking Tauri for Designer
Dev jams a desktop app into the browser — designers swoon, security clutches pearls
TLDR: A dev made a Tauri desktop app run in a browser by faking its internals and relaying calls over WebSocket, so designers can iterate without installing Rust. Comments cheer the speed but warn about remote-code-execution risks if this ever leaves dev use, making it both exciting and nerve‑racking
A wild hack just dropped: someone made a Tauri desktop app run inside a normal browser, and the comments section went full popcorn mode. Tauri is the thing that lets web code act like a desktop app, but it normally relies on hidden “internals” that don’t exist in Chrome or Firefox. The fix? A cheeky shim that fakes those missing parts and a WebSocket bridge that whispers commands back to the real Rust engine. Translation: designers can tweak the UI in-browser while the desktop app quietly does the heavy lifting. No heavy Rust setup, thanks to a convenient staging build. The community split fast. Productivity stans are yelling “ship it,” calling it the obvious future where designers become developers. Skeptics showed up with the RCE alarm (that’s “remote code execution,” aka security nightmare) and begged: keep this strictly dev-only. The “Isn’t Tauri just a webview?” crowd got schooled: it’s not that simple without those secret bits. There were jokes about “duct-taping a webview to a websocket,” and one meme-y chorus of “UI-in-a-browser-in-an-editor-ception.” Meanwhile, link hunters poked through fastrepl/char to peek at the new [plugins/relay] magic, wondering what chaos this could unleash if Electron did it too. Drama meter: high, with a side of caution
Key Points
- •A Tauri frontend was made to run in a normal browser by shimming Tauri’s internal globals.
- •Tauri relies on __TAURI_INTERNALS__, causing invoke and event subscriptions to break outside its WebView.
- •A Vite-injected shim.js and a WebSocket-based relay bridge browser calls to the Rust backend.
- •Code reconstructs window.__TAURI_INTERNALS__ and routes invoke() to the relay server for Rust handling.
- •A staging build with devtools acts as the Rust backend, enabling UI iteration in TypeScript without full Rust setup.