# MAL-2026-13815: Malicious code in hngfykuvgh4 (npm)


- **Type:** Malicious package
- **Package:** `hngfykuvgh4` (npm)
- **Published:** 12 Aug 2026
- **Also known as:** GHSA-pvhh-8339-3m5j

## What is MAL-2026-13815?

MAL-2026-13815 is a malicious package in hngfykuvgh4, published on 12 Aug 2026. 

### Official description

Package contains a single index.html declared as `main` that impersonates a Cloudflare 'Just a moment…' verification page, embedding a real Turnstile widget and an obfuscator.io-obfuscated script. On any Turnstile callback (success, error, expired, timeout, unsupported), the script assembles a destination URL from a scrambled string array, appends the visitor's query-string parameters, and calls window.location.replace() to redirect the visitor. No package.json lifecycle scripts, no JS entrypoint, and HTML cannot be require()d — installing or importing this package does not execute code against a developer or build system. The artifact abuses the npm registry as static hosting for an end-user phishing/redirect lure (nonsense package name, no author metadata, Cloudflare-branded impersonation, obfuscated destination). Not a supply-chain attack against installers, but worth human review for registry-abuse takedown.

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-2026-13815?

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-2026-13815 is a malicious package: hngfykuvgh4 (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-2026-13815/ (Markdown: https://insights.sbomify.com/MAL-2026-13815/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13815

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13815/
Summaries are generated and may contain mistakes; the official description above is the record.