# MAL-2026-6050: Malicious code in create-mastra (npm)


- **Type:** Malicious package
- **Package:** `create-mastra` (npm)
- **Published:** 17 Jun 2026
- **Also known as:** GHSA-jgwq-x2m5-mxhm

## What is MAL-2026-6050?

MAL-2026-6050 is a malicious package in create-mastra, published on 17 Jun 2026. 

### Official description

create-mastra is the Mastra framework's project scaffolder, distributed as a bundled CLI. The flagged signals are generic occurrences of the literal string 'POST' across the minified dist/index.js (lines 245-247, 679, 16066) without corroborating evidence of a hardcoded attacker C2 endpoint, install-time exfiltration, or credential harvest. No install/postinstall lifecycle hooks were identified that would auto-execute network behavior on `npm install`. Keyword co-occurrence in a minified rollup bundle is the weakest evidence shape and is consistent with normal HTTP client code in a CLI scaffolder. Routing for human review to confirm the destinations of those POST calls are documented Mastra endpoints rather than attacker infrastructure.

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-2026-6050?

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-2026-6050 is a malicious package: create-mastra (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-2026-6050/ (Markdown: https://insights.sbomify.com/MAL-2026-6050/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6050

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6050/
Summaries are generated and may contain mistakes; the official description above is the record.