# MAL-2026-12922: Malicious code in bnpl-blocks-desktop-bnpl-floating-button (npm)


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

## What is MAL-2026-12922?

MAL-2026-12922 is a malicious package in bnpl-blocks-desktop-bnpl-floating-button, published on 5 Aug 2026. 

### Official description

On require() of the package, index.js loads _helpers.js which downloads a platform-specific binary from Cloudflare Workers hosts whose domain strings are reassembled at runtime via Array.join (e.g. oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT fallback channel to *.dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched bytes are written to /tmp or %TEMP% under deceptive names (.cache_<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. A '.analytics_state' marker file and 'telemetry'/'dotnet_diag' naming are used as cover. There is no hash or signature verification, the payload URL is unpinned and mutable, and the harm fires automatically on module load.

## What should I do about MAL-2026-12922?

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-2026-12922 is a malicious package: bnpl-blocks-desktop-bnpl-floating-button (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-2026-12922/ (Markdown: https://insights.sbomify.com/MAL-2026-12922/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12922

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12922/
Summaries are generated and may contain mistakes; the official description above is the record.