# MAL-2026-12798: Malicious code in npm-groat (npm)


- **Type:** Malicious package
- **Package:** `npm-groat` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12798?

MAL-2026-12798 is a malicious package in npm-groat, published on 5 Aug 2026. 

### Official description

npm-groat@1.1.1 declares a postinstall script that executes dist/config.js on npm install. That script performs an outbound fetch to https://my-api.trade-api.workers.dev?id=0 and then evaluates the response by calling globalThis[data.success](data.id) — treating attacker-controlled JSON fields as the name of a global function (e.g. eval or Function) and its argument. This gives the remote endpoint arbitrary code execution on the installer's host during package installation. The same file also contains a bare globalThis[tag](text) referencing undeclared identifiers, consistent with a dead-drop stager rather than legitimate configuration. The package's advertised purpose has no need to contact a remote server at install time.

## What should I do about MAL-2026-12798?

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-2026-12798 is a malicious package: npm-groat (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-2026-12798/ (Markdown: https://insights.sbomify.com/MAL-2026-12798/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12798

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12798/
Summaries are generated and may contain mistakes; the official description above is the record.