# MAL-2026-13784: Malicious code in bgncvhferucfds (npm)


- **Type:** Malicious package
- **Package:** `bgncvhferucfds` (npm)
- **Published:** 12 Aug 2026
- **Also known as:** GHSA-p783-m8pp-74w8

## What is MAL-2026-13784?

MAL-2026-13784 is a malicious package in bgncvhferucfds, published on 12 Aug 2026. 

### Official description

The package's sole content is a single obfuscated HTML file declared as `main`. When loaded in a browser, the page renders a fake Cloudflare Turnstile 'Just a moment...' verification screen, reconstructs a URL from string fragments that resolves to login.microsoft.com, and redirects the browser to that URL carrying the current page's query parameters. There are no lifecycle scripts, no JavaScript entry point, and the HTML is not executed by `npm install` or `require()`, so a developer installing the package is not directly attacked. The package abuses the npm registry (and its public CDN mirrors such as unpkg/jsDelivr) as free hosting for a Microsoft-credential phishing lure, using the Cloudflare-challenge cover story to bounce victims into an attacker-parameterized Microsoft login flow.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-13784?

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-2026-13784 is a malicious package: bgncvhferucfds (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-2026-13784/ (Markdown: https://insights.sbomify.com/MAL-2026-13784/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13784

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13784/
Summaries are generated and may contain mistakes; the official description above is the record.