MAL-2026-4161 Malicious code in @cap-js/openapi (npm)
Malicious package
Published
MAL-2026-4161 is a malicious package: @cap-js/openapi (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-2026-4161/ (Markdown: https://insights.sbomify.com/MAL-2026-4161/index.md)
- Package
- @cap-js/openapi
- Registry
- npm
What is MAL-2026-4161?
MAL-2026-4161 is a malicious package in @cap-js/openapi, published on 19 May 2026.
Official description
The package @cap-js/openapi was found to contain malicious code.
This package was compromised as part of the ongoing "Mini Shai-Hulud is back" worm by the TeamPCP threat actor.
The package will steal credentials and then propogate it to every package it has access to. The package also attempts to remain persistent.
What should I do about MAL-2026-4161?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.