# MAL-2026-6126: Malicious code in @onum-releases/shared-components (npm)


- **Type:** Malicious package
- **Package:** `@onum-releases/shared-components` (npm)
- **Published:** 18 Jun 2026

## What is MAL-2026-6126?

MAL-2026-6126 is a malicious package in @onum-releases/shared-components, published on 18 Jun 2026. 

### Official description

On require()/import, index.js reads os.hostname() and issues an HTTP GET to 'shared-components.<hostname>.200majoeu01dk02xnjdajro1isojc90y.oastify.com/shared-components', leaking the installer's hostname out-of-band to an attacker-controlled Burp Collaborator subdomain. The package.json describes the package as a 'Security PoC placeholder - benign, no runtime payload' but the shipped index.js contradicts that claim and actively beacons on every load. The @onum-releases scope combined with the generic 'shared-components' name is consistent with a dependency-confusion squat against an internal Onum private package; any build that resolves this public version executes the beacon and discloses the host identifier to a third party. Self-described 'PoC' framing does not neutralize the harm — the code performs real installer-side data exfiltration.

## What should I do about MAL-2026-6126?

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-2026-6126 is a malicious package: @onum-releases/shared-components (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-2026-6126/ (Markdown: https://insights.sbomify.com/MAL-2026-6126/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6126

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6126/
Summaries are generated and may contain mistakes; the official description above is the record.