# MAL-2026-18244: Malicious code in @k18k/entrypoint-sdk-darwin-x64 (npm)


- **Type:** Malicious package
- **Package:** `@k18k/entrypoint-sdk-darwin-x64` (npm)
- **Published:** 23 Oct 2026
- **Also known as:** GHSA-j58m-rwhr-923h

## What is MAL-2026-18244?

MAL-2026-18244 is a malicious package in @k18k/entrypoint-sdk-darwin-x64, published on 23 Oct 2026. 

### Official description

Package @k18k/entrypoint-sdk-darwin-x64@0.2.1 is a darwin-x64 platform-specific sub-package, following the standard npm pattern for distributing prebuilt native binaries per OS/architecture (optionalDependencies selected by the parent SDK package based on process.platform/process.arch). The tarball contains a small number of files and no install, preinstall, postinstall, or prepare lifecycle scripts were observed. No network calls, no reads of installer secrets (~/.aws, ~/.ssh, ~/.npmrc, environment variables), no fetch-and-execute, no silent-relay, and no persistence behavior were observed.

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-2026-18244?

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-2026-18244 is a malicious package: @k18k/entrypoint-sdk-darwin-x64 (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-2026-18244/ (Markdown: https://insights.sbomify.com/MAL-2026-18244/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-18244

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-18244/
Summaries are generated and may contain mistakes; the official description above is the record.