Avoid command injection

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Metadata

ID: javascript-node-security/command-injection

Language: JavaScript

Severity: Warning

Category: Security

CWE: 78

Description

When executing a command, never use unchecked variables. Make sure that each variable in the command has been checked.

Non-Compliant Code Examples

childprocess.exec(`mv ${src} ${dst}`, (error, stdout, stderr) => {});
childprocess.exec('mv ' + src + " " + dst, (error, stdout, stderr) => {});

Compliant Code Examples

childprocess.exec('mv /tmp/src /tmp/dst', (error, stdout, stderr) => {});

const orderId = /(?:^|\s)([RF])[\s-]?(\d{7,})/i.exec(src || '');
const invoiceId = /([A-Z]{2}\d{6})/i.exec(input + suffix);

const phoneRegex = /\d{3}-\d{3}-\d{4}/;
const phone = phoneRegex.exec(areaCode + '-' + phone);
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