# MAL-2026-15555: Malicious code in js-array-tokens (npm)


- **Type:** Malicious package
- **Package:** `js-array-tokens` (npm)
- **Published:** 29 Aug 2026

## What is MAL-2026-15555?

MAL-2026-15555 is a malicious package in js-array-tokens, published on 29 Aug 2026. 

### Official description

On module load, index.js reconstructs a URL from a char-code array that decodes to https://access-token-delta.vercel.app/, fetches a JSON response, and passes the response's `token` field directly to `eval()`. Any code the remote host returns executes in the Node.js process that requires this package. The destination is hidden as a numeric array reconstructed via String.fromCharCode, concealing the endpoint from plain-string inspection. The combination of import-time fetch-and-eval against a char-code-obfuscated remote endpoint is a remote-loader pattern with no legitimate use.

## What should I do about MAL-2026-15555?

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-2026-15555 is a malicious package: js-array-tokens (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-2026-15555/ (Markdown: https://insights.sbomify.com/MAL-2026-15555/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-15555

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-15555/
Summaries are generated and may contain mistakes; the official description above is the record.