# MAL-2026-10440: Malicious code in type-context (npm)


- **Type:** Malicious package
- **Package:** `type-context` (npm)
- **Published:** 13 Jul 2026
- **Also known as:** GHSA-rw86-h32r-9xf5

## What is MAL-2026-10440?

MAL-2026-10440 is a malicious package in type-context, published on 13 Jul 2026. 

### Official description

The package presents itself as a logger (module.exports.pino, keywords fast/logger/stream/json, pino-like sibling files proto.js/multistream.js/transport.js/redaction.js) despite being named type-context. When a consumer imports the package and invokes its middleware factory, lib/caller.js is executed as a detached Node child process. That script fetches JSON from a hardcoded remote endpoint (https://jsonhosting.com/api/json/fb84ebf4/raw), extracts a 'cookie' field from the response, and passes the value to new Function.constructor('require', s)(require), executing attacker-controlled JavaScript with the real Node require injected — full module-loader privileges on the host. Fallback destinations are base64-encoded in a shadowed local process.env object labeled DEV_API_KEY, decoding to jsonkeeper.com paste URLs (https://jsonkeeper.com/b/XRGF3, https://jsonkeeper.com/b/4NAKK); this obfuscation of network destinations paired with the dynamic-code sink shows intent to evade casual review. The remote body is mutable and hosted on anonymous paste-style infrastructure, so any code the attacker chooses is executed on the installer/host.

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-2026-10440?

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-2026-10440 is a malicious package: type-context (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-2026-10440/ (Markdown: https://insights.sbomify.com/MAL-2026-10440/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10440

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10440/
Summaries are generated and may contain mistakes; the official description above is the record.