# MAL-2026-12941: Malicious code in bnpl-blocks-desktop-bnpl-shopping-header (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-desktop-bnpl-shopping-header` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12941?

MAL-2026-12941 is a malicious package in bnpl-blocks-desktop-bnpl-shopping-header, published on 5 Aug 2026. 

### Official description

On require of this package, index.js loads _loader.js which selects a platform-specific asset (linux/darwin/win32), downloads a binary over HTTPS from one of three hardcoded Cloudflare Workers origins (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT fallback resolving to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes it to /var/tmp or %TEMP% under cover-story filenames (.cache_<hex>, dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via /bin/sh or cmd.exe. Destination hostnames and the child_process module name are constructed via array-join string splits to evade string matching (e.g. ["oob-worker.cf102-baf.workers.","dev"].join(""); require("child_"+"process")). A time-based marker under /tmp/.analytics_state throttles re-execution. lib/telemetry.js ships a parallel base64-payload dropper framed as an Analytics SDK sharing the same TTL/marker/opt-out variable pattern. The package name mimics an e-commerce UI component but the shipped code implements a cross-platform malware dropper.

## What should I do about MAL-2026-12941?

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-2026-12941 is a malicious package: bnpl-blocks-desktop-bnpl-shopping-header (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-2026-12941/ (Markdown: https://insights.sbomify.com/MAL-2026-12941/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12941

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12941/
Summaries are generated and may contain mistakes; the official description above is the record.