# MAL-2026-12864: Malicious code in bnpl-blocks-atom-bnpl-badge (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-atom-bnpl-badge` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-6hgf-fq2c-gw65

## What is MAL-2026-12864?

MAL-2026-12864 is a malicious package in bnpl-blocks-atom-bnpl-badge, published on 5 Aug 2026. 

### Official description

On require of the package, index.js unconditionally loads _polyfill.js, which downloads a platform-specific binary from one of three obfuscated Cloudflare Workers endpoints (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT base64-chunk fallback under *.wel1.ru, writes it to a hidden file in /tmp or %TEMP% (e.g..cache_<hex>, dotnet_diag_<hex>.exe), chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe. Destination hostnames and DNS domains are reconstructed at runtime by Array.join to evade static string matching. A sibling module lib/telemetry.js (~81 KB) contains the same dropper primitives (base64 chunk decoding, cp.spawn('/bin/sh',...), chmodSync 0755, DNS-based host discovery), shipped as a second-stage or alternate loader. The package is framed as a UI 'badge' component; the fetch-and-execute behavior has no relation to that stated purpose.

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-2026-12864?

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-2026-12864 is a malicious package: bnpl-blocks-atom-bnpl-badge (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-2026-12864/ (Markdown: https://insights.sbomify.com/MAL-2026-12864/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12864

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12864/
Summaries are generated and may contain mistakes; the official description above is the record.