# MAL-2026-14391: Malicious code in fund-calculator (npm)


- **Type:** Malicious package
- **Package:** `fund-calculator` (npm)
- **Published:** 24 Aug 2026

## What is MAL-2026-14391?

MAL-2026-14391 is a malicious package in fund-calculator, published on 24 Aug 2026. 

### Official description

Package declares a preinstall script (`node index.js`) that fires unconditionally on `npm install`. index.js reads installer-side identifiers via `os.hostname()`, `os.userInfo()`, `INIT_CWD`, home directory, and the parent project's package.json (name/author/repository/homepage), and additionally resolves the installer's public IP via https requests to api.ipify.org, icanhazip.com, and ifconfig.me. The collected data is transmitted to the hardcoded callback `da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.fun` over three channels: HTTP POST to port 80, HTTPS POST to port 443 on path `/poc/${uuid}`, and DNS resolution of hex-encoded payload chunks (Buffer.from(body).toString('hex') split into 60-character labels) emitted as subdomains under the callback host to bypass egress filters that permit DNS but block outbound HTTP. The 999.9.12 version number and package name are consistent with a dependency-confusion name-squat designed to win resolution against a private internal package of the same name.

## What should I do about MAL-2026-14391?

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-2026-14391 is a malicious package: fund-calculator (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-2026-14391/ (Markdown: https://insights.sbomify.com/MAL-2026-14391/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-14391

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-14391/
Summaries are generated and may contain mistakes; the official description above is the record.