Which versions of @mastra/evals are malicious?

The following npm versions of @mastra/evals are flagged malicious: 1.3.1. Treat any of these as compromised.

How do I remediate @mastra/evals if I installed it?

Remove @mastra/evals from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound network activity or persistence. Use O3 Security's dependency scanner to confirm the package and its artifacts are fully purged across your stack.

Is @mastra/evals part of a known attack campaign?

Yes — @mastra/evals is associated with the GHSA-c9hm-w6m5-hwcj campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

Can O3 Security detect @mastra/evals in my codebase?

Yes. O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, blocking @mastra/evals and packages like it before any post-install script runs.

Malicious package

@mastra/evalsnpm

Malicious code in @mastra/evals (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-5947

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

npm uninstall @mastra/evals

What this malware does

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.

Malicious versions

1 flagged

1.3.1

Indicators of compromise (SHA-256)

d54f073f0d2ca3dc2620f0269e930084da1e62f637d51b1082a95f7ed0e549fa

a392f3ed1005b1cefbe3b95d3780038336c22807f107e5b4e7a562d71373275c

Frequently asked questions

No. @mastra/evals on npm has been identified as a malicious package (version 1.3.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-c9hm-w6m5-hwcj

References

github.com

Scan your dependencies

O3 Security blocks malicious packages like this at install time and in CI.

Supply-chain protection