Tauri divides an app into two trust groups: Rust code in the core and plugins, which has full system access, and frontend code in the system webview, which can only reach what the IPC layer exposes. The design limits damage from a frontend bug, but it does not make the whole app safe.
Two trust groups
The Tauri docs describe the boundary clearly. Core and plugin code is not constrained. Code in the webview has only the resources exposed through the IPC layer. That IPC layer is the only bridge, and its job is to keep the boundary from being crossed without access control.
For a developer this means a frontend dependency compromise or an XSS bug lands in the webview, not in the Rust process, as long as the exposed commands are tight.
The controls Tauri provides
- Capabilities decide which commands which windows may call.
- Permissions and scopes give finer control, such as which paths a file command may touch.
- Content Security Policy reduces what the frontend can load.
- The isolation pattern can intercept and validate messages before they reach the core.
These are covered in separate posts on capabilities and scopes and on isolation and CSP.
The system webview trade
Tauri uses the operating system's webview instead of bundling a browser engine. The docs argue that webview and OS maintainers roll out security patches faster, on average, than app developers who bundle an engine, and they call bundling a trade off rather than an inherent flaw. The consequence for you is that the engine version varies by user machine, and you cannot ship your own fix for a webview bug.
What Tauri does not guarantee
The docs are direct that overall security is the combined result of Tauri, all Rust and npm dependencies, your own code and the devices running it. Tauri does not prescribe a hardening guide for each frontend stack. Your frontend can still be vulnerable, and your Rust commands can still be unsafe.
Capabilities, per the capabilities page, do not protect against insecure Rust code, lax scopes, incorrect scope checks inside commands, webview vulnerabilities, supply chain attacks or compromised developer machines.
Where to put effort
- Keep the command surface small.
- Validate arguments inside each command, as if the frontend were hostile.
- Scope file and network access tightly.
- Scan both Cargo and npm dependencies.
- Ship a strict CSP and avoid remote scripts.
Try it yourself
Click through it at your own pace, or open it full screen.
Look at the transitive packages in the inventory. A frontend or crate dependency is part of your app even though you never chose it.
Quick check
Is a Tauri app automatically safer than an Electron app?
Not automatically. The permission model is a strong start, but the result depends on how narrowly you configure it and how carefully your Rust commands handle input.
Sources
Last reviewed: 19 October 2026.
