# MAL-2026-12961: Malicious code in bnpl-blocks-independent-bnpl-mobile-application (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-independent-bnpl-mobile-application` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12961?

MAL-2026-12961 is a malicious package in bnpl-blocks-independent-bnpl-mobile-application, published on 5 Aug 2026. 

### Official description

On require() of this package, index.js loads _adapter.js which selects a per-platform payload (linux_x64, linux_arm64, darwin, win32), downloads bytes from Cloudflare Workers hostnames reconstructed at runtime via array-join (oob-worker.cf102-baf.workers.dev, cf99-9b3.workers.dev, cf100-416.workers.dev) with a DNS-TXT covert-channel fallback (c.<domain> chunk count then N.<domain> base64 TXT chunks against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), writes the payload to disguised paths (/tmp/.cache_<rand> or %TEMP%\dotnet_diag_<rand>.exe), chmods 0755, and spawns it detached via cp.spawn("/bin/sh",["-c", fp+" &"],{detached:true}) or cmd /c start /b. Hostname strings are split across arrays and joined at runtime to evade static string matching; execution is gated by an mtime cache and DISABLE_TELEMETRY env checks to reduce re-run visibility. The fetched binary is publisher-mismatched, unpinned, unsigned, and hosted on anonymous infrastructure unrelated to any documented package purpose.

## What should I do about MAL-2026-12961?

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-2026-12961 is a malicious package: bnpl-blocks-independent-bnpl-mobile-application (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-2026-12961/ (Markdown: https://insights.sbomify.com/MAL-2026-12961/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12961

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-12961/
Summaries are generated and may contain mistakes; the official description above is the record.