Which versions of @mastra/hono are malicious?

The following npm versions of @mastra/hono are flagged malicious: 1.4.26. Treat any of these as compromised.

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

Remove @mastra/hono 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/hono part of a known attack campaign?

Yes — @mastra/hono is associated with the GHSA-89jf-vg4p-9vmj 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/hono 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/hono and packages like it before any post-install script runs.

Malicious package

@mastra/hononpm

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

MAL-2026-5950

Immediate action

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

npm uninstall @mastra/hono

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

1.4.26

Indicators of compromise (SHA-256)

1ed4177a8fb31809df36c88a8dddc4cd35e888cb1cebbc380e44c09acdd055f4

b33418d936ae32ad0b08da9221e38fa26014508ad30fa5d3a815303cbc35c2a4

Frequently asked questions

No. @mastra/hono on npm has been identified as a malicious package (version 1.4.26 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GHSA-89jf-vg4p-9vmj

References

github.com

Scan your dependencies

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

Supply-chain protection