Which versions of mastra are malicious?

The following npm versions of mastra are flagged malicious: 1.13.1. Treat any of these as compromised.

How do I remediate mastra if I installed it?

Remove mastra 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 part of a known attack campaign?

Yes — mastra is associated with the GHSA-mvf4-vg87-q9vm 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 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 and packages like it before any post-install script runs.

Malicious package

mastranpm

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

MAL-2026-5965

Immediate action

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

npm uninstall mastra

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

1.13.1

Indicators of compromise (SHA-256)

177b60c8d45a21867d69c269f21c334505b8c0298b497cbed321d403be4311f7

bd7e724f9b33f25021b1da14adbe9c148b2df1addc912f98a372e1a4f486308e

Frequently asked questions

No. mastra on npm has been identified as a malicious package (version 1.13.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-mvf4-vg87-q9vm

References

github.com

Scan your dependencies

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

Supply-chain protection