# MAL-2026-10905: Malicious code in win-build-utils (npm)


- **Type:** Malicious package
- **Package:** `win-build-utils` (npm)
- **Published:** 20 Jul 2026
- **Also known as:** GHSA-7ffq-88v5-rmwc

## What is MAL-2026-10905?

MAL-2026-10905 is a malicious package in win-build-utils, published on 20 Jul 2026. 

### Official description

The package name suggests a Windows build helper utility, but no concrete behavioral evidence is available to confirm or refute installer-side risk. No exfiltration, install-time fetch, credential access, or other attack-class behavior was observed. The package warrants human review to confirm contents and intent before issuing a public verdict.

## What should I do about MAL-2026-10905?

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-2026-10905 is a malicious package: win-build-utils (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-2026-10905/ (Markdown: https://insights.sbomify.com/MAL-2026-10905/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10905

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10905/
Summaries are generated and may contain mistakes; the official description above is the record.