# MAL-2026-13040: Malicious code in boxy-devtools-tokens (npm)


- **Type:** Malicious package
- **Package:** `boxy-devtools-tokens` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13040?

MAL-2026-13040 is a malicious package in boxy-devtools-tokens, published on 5 Aug 2026. 

### Official description

The package's main entry (index.js) unconditionally loads _compat.js on require(). _compat.js assembles a rotating list of Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev) from split string fragments joined via.join(''), with a DNS TXT fallback channel (c.<domain>/N.<domain> under *.dl.wel1.ru) used when HTTPS delivery is blocked. It downloads a platform-specific binary via https.get, writes it to a temp file with a disguised name, chmods it 0755 on Unix, and spawns it detached via spawn('/bin/sh',...) or spawn('cmd',...). An mtime stamp file suppresses re-execution, and environment variables named to resemble opt-out signals (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) gate execution. The package is advertised as a token library; the shipped code performs an out-of-band binary drop from attacker-controlled infrastructure with no relationship to that purpose.

## What should I do about MAL-2026-13040?

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-2026-13040 is a malicious package: boxy-devtools-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-2026-13040/ (Markdown: https://insights.sbomify.com/MAL-2026-13040/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13040

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-13040/
Summaries are generated and may contain mistakes; the official description above is the record.