# MAL-2026-10153: Malicious code in notifier-log (npm)


- **Type:** Malicious package
- **Package:** `notifier-log` (npm)
- **Published:** 10 Jul 2026

## What is MAL-2026-10153?

MAL-2026-10153 is a malicious package in notifier-log, published on 10 Jul 2026. 

### Official description

The package presents itself as a pino-compatible logger (main entry exports a middleware aliased as `pino`, and `lib/` contains pino-shaped files such as proto.js, redaction.js, multistream.js, transport.js), but its middleware spawns a detached child process running `lib/caller.js` which fetches a JSON blob from a hardcoded jsonkeeper.com paste, extracts a `.cookie` string, and passes it to `new Function.constructor('require', s)(require)`. This executes attacker-controlled JavaScript with full `require` access under the installer's Node process. A base64-encoded backup endpoint and secret header key are stored in `lib/const.js` (decoding to a second jsonkeeper.com paste URL with an `x-secret-key` header), providing a redundant delivery channel. Because jsonkeeper.com is a mutable public paste site, the served payload can be changed at any moment. The logger API is a cover story for the dropper.

## What should I do about MAL-2026-10153?

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-2026-10153 is a malicious package: notifier-log (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-2026-10153/ (Markdown: https://insights.sbomify.com/MAL-2026-10153/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10153

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10153/
Summaries are generated and may contain mistakes; the official description above is the record.