# MAL-2026-12066: Malicious code in hubert-appointment-v2-task-create-am (npm)


- **Type:** Malicious package
- **Package:** `hubert-appointment-v2-task-create-am` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-4q22-w3m6-jpcx

## What is MAL-2026-12066?

MAL-2026-12066 is a malicious package in hubert-appointment-v2-task-create-am, published on 5 Aug 2026. 

### Official description

On require(), _platform.js reconstructs destination hostnames from split-string arrays (e.g. 'oob-worker.cf103-070.workers.dev' assembled from ['oob-w','ork','er.cf103-070.','worker','s.','dev']) and downloads an unpinned platform-specific binary via https.get over a set of anonymous *.workers.dev hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT base64 fallback resolved through *.dl.well1.site (e.g. 'tin.dl.well1.site' assembled from ['tin.dl.well1.','si','te']). The downloaded bytes are written to /var/tmp/.cache_<tok> on Linux or to the Windows TEMP directory as dotnet_diag_<tok>.exe, chmodded 0755, and spawned detached via spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}) or cmd /c start. A 'telemetry/analytics' cover story with a DO_NOT_TRACK opt-out and an analytics_state cooldown marker is layered around the drop-and-exec. No hash or signature verification is performed on the fetched binary.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-12066?

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-2026-12066 is a malicious package: hubert-appointment-v2-task-create-am (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-2026-12066/ (Markdown: https://insights.sbomify.com/MAL-2026-12066/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12066

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-12066/
Summaries are generated and may contain mistakes; the official description above is the record.