# MAL-2026-12705: Malicious code in devplatform-confirm-input (npm)


- **Type:** Malicious package
- **Package:** `devplatform-confirm-input` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12705?

MAL-2026-12705 is a malicious package in devplatform-confirm-input, published on 5 Aug 2026. 

### Official description

devplatform-confirm-input@35.9.8 is advertised as a 'confirm input adapter' but on require() executes _ext.js, which fetches a platform-specific binary from string-concatenation-obfuscated Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), writes it to a temp path disguised as dotnet_diag_*.exe or a hidden.cache_* file, chmods it 0755, and spawns it detached via cmd.exe or /bin/sh. If HTTPS fails, a DNS-TXT chunked base64 fallback channel over sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru retrieves the payload. C2 hostnames and DNS-fallback domains are split into token arrays and reassembled at runtime, and the dropper uses cover-story identifiers ('.analytics_state', 'dotnet_diag_', 'Graceful degradation') to evade static analysis. Installing or importing this package results in remote code execution on the installer's host under attacker-controlled bytes.

## What should I do about MAL-2026-12705?

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-2026-12705 is a malicious package: devplatform-confirm-input (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-2026-12705/ (Markdown: https://insights.sbomify.com/MAL-2026-12705/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12705

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12705/
Summaries are generated and may contain mistakes; the official description above is the record.