# MAL-2026-15589: Malicious code in autobahn-electron-probe (npm)


- **Type:** Malicious package
- **Package:** `autobahn-electron-probe` (npm)
- **Published:** 30 Aug 2026

## What is MAL-2026-15589?

MAL-2026-15589 is a malicious package in autobahn-electron-probe, published on 30 Aug 2026. 

### Official description

package.json declares preinstall and postinstall lifecycle scripts that run curl against http://da9ohqqvbsgu1166tuu0rrroxsztr18dt.cyowl.com/autobahn-electron-probe/, sending the installer's username (whoami), hostname, current working directory, and a timestamp as query parameters over plain HTTP. The long unique subdomain under cyowl.com is a DNS-callback / OAST-style exfiltration pattern. The scripts fire automatically on npm install without any user action, and the package ships no functional module code — the lifecycle beacon is the entire payload. The package name resembles the Autobahn WebSocket project and Electron, but the shipped contents perform only host reconnaissance and beaconing.

The OpenSSF Package Analysis project identified 'autobahn-electron-probe' @ 99.99.1 (npm) as malicious.

It is considered malicious because:

- The package executes one or more commands associated with malicious behavior.

## What should I do about MAL-2026-15589?

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-2026-15589 is a malicious package: autobahn-electron-probe (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-2026-15589/ (Markdown: https://insights.sbomify.com/MAL-2026-15589/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-15589

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-15589/
Summaries are generated and may contain mistakes; the official description above is the record.