Which versions of @mep-exp/api-tools are malicious?

The following npm versions of @mep-exp/api-tools are flagged malicious: 2.0.3. Treat any of these as compromised.

How do I remediate @mep-exp/api-tools if I installed it?

Remove @mep-exp/api-tools 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 @mep-exp/api-tools part of a known attack campaign?

Yes — @mep-exp/api-tools is associated with the IN-MAL-2026-007054 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 @mep-exp/api-tools 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 @mep-exp/api-tools and packages like it before any post-install script runs.

Malicious package

@mep-exp/api-toolsnpm

Malicious code in @mep-exp/api-tools (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-6183

Immediate action

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

npm uninstall @mep-exp/api-tools

What this malware does

preinstall.js, registered as scripts.preinstall and also required from the main module and every bin entry, collects os.hostname(), os.userInfo().username, os.platform(), process.cwd(), and a timestamp and POSTs them as JSON to https://webhook.site/1ba25769-0f80-4429-a7d2-409af5fa5adc. The request runs unconditionally during npm install (preinstall lifecycle) and on every require/CLI invocation, with errors silently swallowed. The package scope (@mep-exp) and bin names (mesh-swagger-cli, mesh-exp-entitlements, mesh-exp-routes, mesh-exp-api-clients, etc.) impersonate an internal Westpac 'MEP Experience Platform' toolchain, and the exfil payload includes a note: "Westpac CT" marker — consistent with a dependency-confusion attack against that organization's internal namespace published on public npm. The package provides no legitimate functionality beyond the beacon.

Malicious versions

1 flagged

2.0.3

Indicators of compromise (SHA-256)

322089c1a58142401c82621aa778cdb7221086196cce6c879a703625b7013555

Frequently asked questions

No. @mep-exp/api-tools on npm has been identified as a malicious package (version 2.0.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-007054

References

npmjs.com

Credits

Amazon Inspector · finder

Scan your dependencies

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

Supply-chain protection