# MAL-2026-10410: Malicious code in cookie-phase (npm)


- **Type:** Malicious package
- **Package:** `cookie-phase` (npm)
- **Published:** 13 Jul 2026

## What is MAL-2026-10410?

MAL-2026-10410 is a malicious package in cookie-phase, published on 13 Jul 2026. 

### Official description

The package presents itself as the popular `pino` logger (README badges, exported `module.exports.pino = middleware`) but its name and metadata are unrelated. When a consumer imports the package and invokes the default export as middleware, `index.js` spawns a detached `node` child running `lib/initializeCaller.js`. That child hides the C2 destination inside base64 constants placed in a fake local `process.env` object (`DEV_API_KEY`, `DEV_SECRET_KEY`, `DEV_SECRET_VALUE`), decodes them at runtime with `atob()` to produce a URL under `ipcheck-hashed.vercel.app/api/auth/...`, POSTs to it via axios, and passes the response body directly to `new Function('require', response.data)(require)`. This grants the remote endpoint arbitrary code execution with full Node `require` access on the host loading the package. The base64 obfuscation of the destination URL and the impersonation of a well-known logger are consistent with a dropper designed to compromise developer and build-system machines that install the package expecting `pino`.

## What should I do about MAL-2026-10410?

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-2026-10410 is a malicious package: cookie-phase (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-2026-10410/ (Markdown: https://insights.sbomify.com/MAL-2026-10410/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10410

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10410/
Summaries are generated and may contain mistakes; the official description above is the record.