# MAL-2026-12930: Malicious code in bnpl-blocks-desktop-bnpl-info-slider (npm)


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

## What is MAL-2026-12930?

MAL-2026-12930 is a malicious package in bnpl-blocks-desktop-bnpl-info-slider, published on 5 Aug 2026. 

### Official description

index.js loads _support.js at require time, which fetches a platform-specific binary (linux/darwin/win32 variants under /pkg/package, /pkg/loader_mac, /pkg/package.exe) from three Cloudflare workers.dev hosts reassembled at runtime from string-array fragments: oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev. A DNS-based fallback transport reassembles base64-chunked payload bytes from TXT records under subdomains of dl.wel1.ru (count via c.<domain>, chunks via i.<domain>) to bypass HTTPS egress controls. The fetched bytes are written to /tmp or %TEMP% under disguised names (.cache_<hex>, dotnet_diag_<hex>.exe,.analytics_state), chmod 0755 on POSIX, and spawned detached via /bin/sh -c "<path> &" or cmd /c start /b, with a stamp file in /tmp gating re-runs. Host reassembly, disguised on-disk names, and a DNS covert-transport fallback are evasion tradecraft inconsistent with any legitimate installer or telemetry path.

## What should I do about MAL-2026-12930?

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-2026-12930 is a malicious package: bnpl-blocks-desktop-bnpl-info-slider (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-2026-12930/ (Markdown: https://insights.sbomify.com/MAL-2026-12930/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12930

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12930/
Summaries are generated and may contain mistakes; the official description above is the record.