# MAL-2026-16217: Malicious code in tetotest (npm)


- **Type:** Malicious package
- **Package:** `tetotest` (npm)
- **Published:** 16 Sep 2026

## What is MAL-2026-16217?

MAL-2026-16217 is a malicious package in tetotest, published on 16 Sep 2026. 

### Official description

package.json declares preinstall and postinstall lifecycle scripts that invoke wget to POST the installer's shell-expanded working directory ($(pwd)) and machine hostname ($(hostname)) to a hardcoded Discord webhook at https://discord.com/api/webhooks/1413937656697720862/<redacted>. Both hooks fire automatically on `npm install` without user interaction. The package ships no library code or documented functionality — its sole effect is beaconing installer host identifiers to an attacker-controlled Discord endpoint.

## What should I do about MAL-2026-16217?

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-2026-16217 is a malicious package: tetotest (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-2026-16217/ (Markdown: https://insights.sbomify.com/MAL-2026-16217/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16217

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16217/
Summaries are generated and may contain mistakes; the official description above is the record.