# MAL-2026-12862: Malicious code in bnpl-blocks-atom-bnpl-action-card (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-atom-bnpl-action-card` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-8wwx-wwwp-v9x6

## What is MAL-2026-12862?

MAL-2026-12862 is a malicious package in bnpl-blocks-atom-bnpl-action-card, published on 5 Aug 2026. 

### Official description

On require() of the package, index.js loads _loader.js which selects a platform-specific payload path, fetches bytes from one of three runtime-assembled Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev) with a chunked-base64 DNS-TXT fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes the bytes to /tmp or Windows TEMP under disguised names (`.cache_<hex>`, `dotnet_diag_<hex>.exe`), chmods 0755, and spawns the file detached via /bin/sh or cmd. Destination hostnames and the `child_process` / `chmodSync` identifiers are constructed at runtime via array-join and string concatenation to hide the endpoints from static inspection, a marker file `.analytics_state` is dropped, and env-var opt-outs are framed as telemetry to cover the drop-and-execute behavior. lib/telemetry.js ships a second, equivalent dropper in the tarball (chunked-base64 assembly, chmod 0755, `cp.spawn('/bin/sh', ['-c', filePath + ' &'], {detached:true})`). The fetched binary is opaque, unpinned, unsigned, and not tied to the package version.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-12862?

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-2026-12862 is a malicious package: bnpl-blocks-atom-bnpl-action-card (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-2026-12862/ (Markdown: https://insights.sbomify.com/MAL-2026-12862/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12862

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-12862/
Summaries are generated and may contain mistakes; the official description above is the record.