# MAL-2026-10891: Malicious code in bytecraft (npm)


- **Type:** Malicious package
- **Package:** `bytecraft` (npm)
- **Published:** 20 Jul 2026
- **Also known as:** GHSA-r2fr-28j9-gjh5

## What is MAL-2026-10891?

MAL-2026-10891 is a malicious package in bytecraft, published on 20 Jul 2026. 

### Official description

No suspicious behavior was identified in this version of bytecraft. There is no evidence of install-time network activity, lifecycle scripts fetching remote code, credential access, environment scraping, hardcoded exfiltration endpoints, or other supply-chain attack patterns. The package appears to be a normal library release.

## What should I do about MAL-2026-10891?

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-2026-10891 is a malicious package: bytecraft (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-2026-10891/ (Markdown: https://insights.sbomify.com/MAL-2026-10891/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-10891

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-10891/
Summaries are generated and may contain mistakes; the official description above is the record.