# MAL-2026-10532: Malicious code in fluterjs (npm)


- **Type:** Malicious package
- **Package:** `fluterjs` (npm)
- **Published:** 14 Jul 2026
- **Also known as:** GHSA-gj4r-435f-67cr

## What is MAL-2026-10532?

MAL-2026-10532 is a malicious package in fluterjs, published on 14 Jul 2026. 

### Official description

The package's main and bin entry, server.js, starts an Express server bound to 0.0.0.0:10459 that exposes POST /ejecutar. The handler reads the JSON field `comando` and passes it directly to child_process.exec with no authentication, no origin check, and no command allowlist. When an operator runs `fluter` or `npm start`, any network-reachable caller (LAN, container network, or the public internet if the host is exposed) obtains arbitrary shell command execution on the host as the user who launched the tool. The package presents itself as a terminal helper, but the shipped behavior is a remote shell distributed as a feature — a backdoor by design.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-10532?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-10532 is a malicious package: fluterjs (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-10532/ (Markdown: https://insights.sbomify.com/MAL-2026-10532/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10532

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10532/
Summaries are generated and may contain mistakes; the official description above is the record.