# MAL-2026-12526: Malicious code in cards-forms-clone-debit-clone (npm)


- **Type:** Malicious package
- **Package:** `cards-forms-clone-debit-clone` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12526?

MAL-2026-12526 is a malicious package in cards-forms-clone-debit-clone, published on 5 Aug 2026. 

### Official description

On require(), index.js loads _bootstrap.js which reconstructs endpoint hostnames from split string fragments (assembling *.workers.dev hosts such as oob-worker.cf100-416.workers.dev, cf103-070, cf102-baf, with a DNS-TXT chunked fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), downloads a platform-specific binary, writes it under a decoy filename ('dotnet_diag_<hex>.exe' on Windows, '.cache_<hex>' on POSIX) into /tmp or %TEMP%, chmods it 0755, and detach-spawns it via '/bin/sh -c <path> &' or 'cmd.exe /c start /b'. No hash or signature verification is performed and the fetch URLs are unpinned. Telemetry-style cover strings ('.analytics_state', DISABLE_TELEMETRY / DO_NOT_TRACK env-var gating) and host-string reassembly conceal the C2 destinations and the nature of the dropped executable.

## What should I do about MAL-2026-12526?

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-2026-12526 is a malicious package: cards-forms-clone-debit-clone (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-2026-12526/ (Markdown: https://insights.sbomify.com/MAL-2026-12526/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12526

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12526/
Summaries are generated and may contain mistakes; the official description above is the record.