Summary
@codazen/harmonica-mcp v0.3.0 was classified as CRITICAL RISK with a risk score of 6534. Sigil detected 453 findings across 5 files, covering phases including install hooks, code patterns, network exfiltration, credential access, obfuscation. Review the findings below before installing this package.
v0.3.0
10 April 2026, 17:16 UTC
by Sigil Bot
Risk Score
6534
Findings
453
Files Scanned
5
Provenance
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
CRITICALsetup.py executes code at install time
package/dist/index.js:80872
try {
return this.finishSpanSetup(activeSpan, runInfo, op3);
} catch (e4) {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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:91313
}
async function pipeGeneratorWithSetup(to, generator, startSetup, signal, ...args) {
const gen = new AsyncGeneratorWithSetup({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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:171614
"../../node_modules/.pnpm/underscore@1.13.7/node_modules/underscore/modules/isBoolean.js"() {
init_setup();
}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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:226613
var WorkerMessageHandler = {
setup: function setup(handler, port) {
var testMessageProcessed = false;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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:288828
var WorkerMessageHandler = {
setup: function setup(handler, port) {
var testMessageProcessed = false;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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:349817
var WorkerMessageHandler = {
setup: function setup(handler, port) {
var testMessageProcessed = false;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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:381005
var WorkerMessageHandler = {
setup: function setup(handler, port) {
var testMessageProcessed = false;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.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
package/dist/index.js:432532
var workerHandler = new _message_handler.MessageHandler(id + "_worker", id, port);
WorkerMessageHandler.setup(workerHandler, port);
var messageHandler = new _message_handler.MessageHandler(id, id + "_worker", port);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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