# MAL-2026-13024: Malicious code in bnpl-forms-test-utils (npm)


- **Type:** Malicious package
- **Package:** `bnpl-forms-test-utils` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13024?

MAL-2026-13024 is a malicious package in bnpl-forms-test-utils, published on 5 Aug 2026. 

### Official description

On `require('bnpl-forms-test-utils')`, index.js loads _platform.js, which selects a platform-specific endpoint and downloads an opaque binary via https.get from one of three Cloudflare Workers hosts reconstructed at runtime from split-string arrays: oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, and oob-worker.cf103-070.workers.dev. A DNS TXT fallback under {sdk,ext,pkg,net}.dl.wel1.ru reassembles base64 chunks when the HTTPS hosts fail. The fetched bytes are written to /var/tmp or %TEMP% under masquerading names (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755'd, and detached via spawn('/bin/sh', ['-c', path+' &'], {detached:true}) or spawn('cmd.exe', ['/c', 'start',...]). Hostnames and API names are obfuscated via array-join and string concatenation (e.g. require('child_'+'process'), fs['chmod'+'Sync']). A second dropper module lib/telemetry.js (~81 KB) shipped in the tarball implements the same fetch/chmod/spawn/detach pattern with identical obfuscation, though it is not referenced from the current main. The declared purpose is `common helpers`; no native source ships in the package to justify the binary download.

## What should I do about MAL-2026-13024?

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-2026-13024 is a malicious package: bnpl-forms-test-utils (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-2026-13024/ (Markdown: https://insights.sbomify.com/MAL-2026-13024/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13024

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13024/
Summaries are generated and may contain mistakes; the official description above is the record.