MetaMask / MetaMask/metamask-extension

[Bug]: Metamask needs to function without wasm

Open
#37,548 6 comments 0 reactions 0 assignees View on GitHub
external-contributor regression-prod-13.7.0 Sev2-normal team-core-platform type-bug
Dominant language
TypeScript
Stars
13.2k
Forks
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Avg merge
2d 5h
Merged PRs (30d)
451

Description

### Describe the bug

launched via:
chromium --js-flags="--jitless --wasm-jitless"

metamask loads in browser but is not functional. wasm memory is not secure & many major websites allow arbitrary wasm deployments by partners

### Expected behavior

metamask should function normally in a browser without wasm support

### Screenshots/Recordings

_No response_

### Steps to reproduce

launch chromium via:
chromium --js-flags="--jitless --wasm-jitless"

### Error messages or log output

```shell

```

### Detection stage

In production (default)

### Version

13.7.0

### Build type

None

### Browser

Chrome

### Operating system

Linux

### Hardware wallet

_No response_

### Additional context

_No response_

### Severity

in my opinion severe, this is a show stopper

Contributor guide

Open the contributing guide

Research direction

Start by reproducing the production build in Chrome with `--js-flags="--jitless --wasm-jitless"` on Linux, then trace where MetaMask depends on WebAssembly during startup and normal use. Done means the extension remains functional in that environment without weakening its expected security behavior; the issue does not name a file or test to target.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript, wasm
Domain
security, web-dev
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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