# MAL-2026-13449: Malicious code in merchantweb-lang-cookie-reset (npm)


- **Type:** Malicious package
- **Package:** `merchantweb-lang-cookie-reset` (npm)
- **Published:** 6 Aug 2026
- **Also known as:** GHSA-5vjj-p6vh-456m

## What is MAL-2026-13449?

MAL-2026-13449 is a malicious package in merchantweb-lang-cookie-reset, published on 6 Aug 2026. 

### Official description

package.json declares the sole dependency `packet-table-thread-stream` as a direct tarball URL to a non-npm host (`https://artifacts.yosiroute.com/npm/packet-table-thread-stream`), with no version pin and no integrity hash. The shrinkwrap marks that dependency `hasInstallScript: true`, so on `npm install` npm fetches opaque code from `artifacts.yosiroute.com` and executes its lifecycle scripts on the installer's machine, bypassing npm registry scanning. The wrapper package itself is a disposable shim: index.js is trivial (only re-exports name/version), and package.json metadata is placeholder (`author: Package Registry`, `description: Generated package`, `repo: github.com/example/...`). The package's only functional effect on install is pulling attacker-controlled code from a non-registry host into the installer's dependency tree and running its install scripts.

## What should I do about MAL-2026-13449?

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-2026-13449 is a malicious package: merchantweb-lang-cookie-reset (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-2026-13449/ (Markdown: https://insights.sbomify.com/MAL-2026-13449/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13449

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13449/
Summaries are generated and may contain mistakes; the official description above is the record.