ISO 27001 Control Reference Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching iso 27001 control reference, ported and verified for JavaScript. In security-sensitive code, using an unverified regex can open the door to both false positives and denial-of-service attacks. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// ISO 27001 Control Reference
// ReDoS-safe | RegexVault — Security > Audit & Compliance

const iso27001ControlReferenceRegex = /^(?:5|6|7|8)\.(?:[1-9]|[1-3][0-9]|4[0-1])(?:\.(?:[1-9]|[1-2][0-9]|30))?$/;

function validateIso27001ControlReference(input: string): boolean {
  return iso27001ControlReferenceRegex.test(input);
}

// Example
console.log(validateIso27001ControlReference("5.1")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Security > Audit & Compliance category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

ISO 27001:2022 control domains: 5 (Organizational, controls 5.1-5.37), 6 (People, 6.1-6.8), 7 (Physical, 7.1-7.14), 8 (Technological, 8.1-8.34). The 2022 update reorganized from the 2013 version's A.5-A.18 structure. Clause 4-10 are the ISMS requirements (not controls).