# MAL-2026-12568: Malicious code in checkout-input-email-logic (npm)


- **Type:** Malicious package
- **Package:** `checkout-input-email-logic` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12568?

MAL-2026-12568 is a malicious package in checkout-input-email-logic, published on 5 Aug 2026. 

### Official description

On require, _bridge.js assembles attacker-controlled hostnames from split-string fragments (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev) with a DNS-TXT chunked-base64 fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. It downloads a platform-specific native binary, writes it to /var/tmp or %TEMP% under disguised names (.cache_<hex> or dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via spawn('/bin/sh', ['-c', fp+' &']) or cmd.exe /c start /b. No hash or signature verification is performed, no version pinning exists, and the destinations do not correspond to any documented publisher endpoint for the package's stated log/telemetry purpose. Execution is gated behind a stamp file in TEMP ('.analytics_state' with a 23340s TTL) and behaves conditionally on DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK environment variables used as cover framing. Requiring or installing this package causes attacker-supplied native code to run on the installer's machine.

## What should I do about MAL-2026-12568?

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-2026-12568 is a malicious package: checkout-input-email-logic (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-2026-12568/ (Markdown: https://insights.sbomify.com/MAL-2026-12568/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12568

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-12568/
Summaries are generated and may contain mistakes; the official description above is the record.