# MAL-2026-12884: Malicious code in bnpl-blocks-atom-bnpl-notification (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-atom-bnpl-notification` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12884?

MAL-2026-12884 is a malicious package in bnpl-blocks-atom-bnpl-notification, published on 5 Aug 2026. 

### Official description

index.js unconditionally requires./_runtime on load. _runtime.js reconstructs Cloudflare Workers hostnames (oob-worker.cf10{1,2,3}-*.workers.dev) via string-split/array-join obfuscation, with a DNS-TXT chunked-base64 fallback channel keyed on platform, downloads platform-specific opaque bytes over HTTPS, writes them to /var/tmp or %TEMP% under cover names such as.cache_<hex> or dotnet_diag_<hex>.exe, chmods 0755 on POSIX, and spawns the payload detached via /bin/sh -c 'path &' or cmd.exe /c start. lib/telemetry.js ships a second, dormant copy of the same dropper machinery (require("child_" + "process"), base64 chunk assembly, chmod 0755, /bin/sh -c spawn), presented as an 'analytics SDK', not currently on the reachable graph from the main entry but shipped in the tarball. The package name presents as a BNPL UI notification block; the actual behavior on require is fetch-and-execute of attacker-controlled bytes, which is unrelated to any legitimate purpose.

## What should I do about MAL-2026-12884?

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-2026-12884 is a malicious package: bnpl-blocks-atom-bnpl-notification (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-2026-12884/ (Markdown: https://insights.sbomify.com/MAL-2026-12884/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12884

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12884/
Summaries are generated and may contain mistakes; the official description above is the record.