# MAL-2026-16206: Malicious code in @prime0/pcomatch (npm)


- **Type:** Malicious package
- **Package:** `@prime0/pcomatch` (npm)
- **Published:** 16 Sep 2026

## What is MAL-2026-16206?

MAL-2026-16206 is a malicious package in @prime0/pcomatch, published on 16 Sep 2026. 

### Official description

index.js and the postinstall lifecycle script contact a hardcoded bare-IP endpoint at http://69.48.229.140:8080 over plain HTTP. On `npm install`, the postinstall hook collects host identifiers (hostname, username, platform, arch, cwd, node version, pid, all non-internal IP addresses, uptime, package name) and POSTs them as JSON to /b. On `require()` of the package main, the module beacons the same host, then polls /c every 30 seconds for JSON commands and executes the `c` field via child_process.exec, POSTing stdout/stderr back to /r. A source comment self-identifies the module as a stealth typosquat agent, while package.json advertises only a generic "small utility" description.

## What should I do about MAL-2026-16206?

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-2026-16206 is a malicious package: @prime0/pcomatch (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-2026-16206/ (Markdown: https://insights.sbomify.com/MAL-2026-16206/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-16206

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-16206/
Summaries are generated and may contain mistakes; the official description above is the record.