VYPR

npm · Malicious package advisory

Malware

claude-code-base-action

MAL-2026-3811

Malicious code in claude-code-base-action (npm)

Details


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## Source: amazon-inspector (3000eab5b77e9247ae3dc1125384eaeb03ecdae7ecd17fe30ee6216a6a87c686)
The package claude-code-base-action was found to contain malicious code.

## Source: ossf-package-analysis (f08c76c834d5f7c2ce735d4dd85684ec34f3dcc29e1353dc7633fb72ee79aaaf)
The OpenSSF Package Analysis project identified 'claude-code-base-action' @ 2.0.0 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

Compromised versions (2)

  • 2.0.0
  • 2.2.2

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.