Is @oclif/plugin-test-esbuild safe to install?

@oclif/plugin-test-esbuild was flagged as CRITICAL RISK (risk score 1440) with 93 findings detected across 20 files. Review the findings before installing.

What security issues were found in @oclif/plugin-test-esbuild?

Sigil detected 93 findings in @oclif/plugin-test-esbuild, including patterns related to install_hooks, code_patterns, obfuscation. See the full scan report for details.

Scans/npm/@oclif/plugin-test-esbuild

@oclif/plugin-test-esbuild

npm

Summary

@oclif/plugin-test-esbuild v0.5.122 was classified as CRITICAL RISK with a risk score of 1440. Sigil detected 93 findings across 20 files, covering phases including install hooks, code patterns, obfuscation. Review the findings below before installing this package.

CRITICAL RISK(1440)

v0.5.122

28 March 2026, 15:16 UTC

by Sigil Bot

Risk Score

1440

Findings

Files Scanned

Provenance

Registry

https://www.npmjs.com/package/@oclif/plugin-test-esbuild/v/0.5.122

Scanned From

https://registry.npmjs.org/@oclif/plugin-test-esbuild/-/plugin-test-esbuild-0.5.122.tgz

Findings by Phase

•

Phase Ordering

Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.

install-pip-setup-exec

CRITICAL

setup.py executes code at install time

package/dist/chunk-HRNB5OEJ.js:1351

    init_cjs_shims();
    function setup(env) {
      createDebug.debug = createDebug;

Why was this flagged?

This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.

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