UUID Any Version (v1–v8) Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching uuid any version (v1–v8), ported and verified for JavaScript. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. 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

// UUID Any Version (v1–v8)
// ReDoS-safe | RegexVault — Web & Network > Misc

const uuidAnyVersionV1v8Regex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-8][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;

function validateUuidAnyVersionV1v8(input: string): boolean {
  return uuidAnyVersionV1v8Regex.test(input);
}

// Example
console.log(validateUuidAnyVersionV1v8("550e8400-e29b-41d4-a716-446655440000")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Web & Network > Misc 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

Versions 6, 7, and 8 are defined in RFC 9562 (2024). Version 0 and 9+ are not valid. The nil UUID (all zeros) does not have a valid version number.