# MAL-2026-5157: Malicious code in @tse-digital/core (npm)


- **Type:** Malicious package
- **Package:** `@tse-digital/core` (npm)
- **Published:** 1 Jun 2026

## What is MAL-2026-5157?

MAL-2026-5157 is a malicious package in @tse-digital/core, published on 1 Jun 2026. 

### Official description

Dependency confusion attack campaign targeting Scandinavian telecommunications and digital services organizations (Telenor, Ownit, Vimla, and Customer 360 / C360). Four packages published by the `debating0166` npm account use inflated version numbers (99.0.x) to win npm registry resolution over private internal packages of the same names. A shared `callback.js` executed via the `preinstall` hook collects system reconnaissance data: hostname, username, working directory, platform, network interfaces, npm registry configuration, and environment variables matching organization-specific and CI/CD patterns (`telenor`, `ownit`, `vimla`, `c360`, `customer`, `threesixty`, `maui`, CI tokens, pipeline variables) and exfiltrates the payload via HTTP POST to `128.199.50.160:8888/depconf`.

This package impersonates `@tse-digital/core`, an internal package of TSE Digital, a digital services entity connected to the Telenor group. Version 99.0.0 was published to resolve ahead of any private registry copy.

## What should I do about MAL-2026-5157?

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-2026-5157 is a malicious package: @tse-digital/core (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-2026-5157/ (Markdown: https://insights.sbomify.com/MAL-2026-5157/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5157

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5157/
Summaries are generated and may contain mistakes; the official description above is the record.