# MAL-2026-12953: Malicious code in bnpl-blocks-independent-bnpl-code-text (npm)


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

## What is MAL-2026-12953?

MAL-2026-12953 is a malicious package in bnpl-blocks-independent-bnpl-code-text, published on 5 Aug 2026. 

### Official description

On require() of the package, index.js loads _init.js which HTTPS-fetches a platform-specific binary (linux_x64, linux_arm64, darwin, win32) from one of four obfuscated Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT base64-chunked fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /tmp or Windows Temp under disguised names (.cache_<rand>, dotnet_diag_<rand>.exe), chmod 0755, and spawned detached via /bin/sh -c or cmd. Destination hosts are reconstructed at runtime by splitting and joining string fragments, filenames impersonate dotnet diagnostics, the fetched payload is not hash- or signature-verified, and none of this behavior relates to the package's stated BNPL purpose. lib/telemetry.js ships a duplicate copy of the same dropper primitives (base64 chunked fetch, chmod 0755, /bin/sh -c detached spawn) under an analytics-SDK cover story, currently unreferenced from the main entry.

## What should I do about MAL-2026-12953?

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-2026-12953 is a malicious package: bnpl-blocks-independent-bnpl-code-text (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-2026-12953/ (Markdown: https://insights.sbomify.com/MAL-2026-12953/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12953

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12953/
Summaries are generated and may contain mistakes; the official description above is the record.