# MAL-2026-12676: Malicious code in delivery-ci-microforms (npm)


- **Type:** Malicious package
- **Package:** `delivery-ci-microforms` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12676?

MAL-2026-12676 is a malicious package in delivery-ci-microforms, published on 5 Aug 2026. 

### Official description

On require('delivery-ci-microforms'), index.js loads _support.js which selects a platform-specific endpoint whose hostname is reassembled at runtime from split string arrays, fetches an opaque binary from oob-worker.cf100-416.workers.dev, cf99-9b3.workers.dev, or cf102-baf.workers.dev, or falls back to a chunked base64 payload carried in DNS TXT records under *.dl.wel1.ru. The fetched bytes are written to /tmp or %TEMP% under deceptive names such as dotnet_diag_<hex>.exe and.cache_<hex>, chmod 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true, stdio:'ignore'}) or spawn('cmd',...) on Windows. lib/telemetry.js additionally reassembles the 'child_process' module name from a split string ('child_' + 'process') to defeat static inspection, and the drop path is gated behind opt-out env checks (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) with an 'analytics' cover-story naming scheme. Installing or requiring the package auto-executes attacker-controlled code from ephemeral Cloudflare Workers hosts on the installer's machine.

## What should I do about MAL-2026-12676?

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-2026-12676 is a malicious package: delivery-ci-microforms (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-2026-12676/ (Markdown: https://insights.sbomify.com/MAL-2026-12676/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12676

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12676/
Summaries are generated and may contain mistakes; the official description above is the record.