# MAL-2026-12988: Malicious code in bnpl-blocks-mobile-bnpl-feedback (npm)


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

## What is MAL-2026-12988?

MAL-2026-12988 is a malicious package in bnpl-blocks-mobile-bnpl-feedback, published on 5 Aug 2026. 

### Official description

On require of the package, index.js loads _shim.js which selects a platform-specific binary from a list of string-split-obfuscated Cloudflare Workers hosts (reassembled at runtime, e.g. oob-worker.cf99-9b3.workers.dev), with a DNS-TXT chunked-base64 fallback across wel1.ru subdomains (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru; count served at c.<domain>, parts at N.<domain>). The retrieved payload is written to /tmp or %TEMP% under cover names resembling system tooling (dotnet_diag_*.exe,.cache_*), chmodded 0755 on POSIX, and spawned detached via spawn("/bin/sh",["-c", path+" &"],{detached:true}) or spawn("cmd",...) on Windows. The destinations are obfuscated, unrelated to any legitimate publisher, and the executed bytes are attacker-controlled.

## What should I do about MAL-2026-12988?

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-2026-12988 is a malicious package: bnpl-blocks-mobile-bnpl-feedback (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-2026-12988/ (Markdown: https://insights.sbomify.com/MAL-2026-12988/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12988

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12988/
Summaries are generated and may contain mistakes; the official description above is the record.