Security-related question about a possible exposed credential

[Emma-NYL]

Hello,

My name is Emma, I am conducting an academic study on possible credential exposure in public GitHub repositories.

While analyzing this repository, I found a string that may represent a credential. I'm including the code snippet below containing possible leakage. To avoid exposing sensitive information publicly, I marked the sensitive information.

Could you please help clarify whether the detected string is:

1. a real credential, or
2. a placeholder / example value?

Thank you for your time.

---

Code snippet (sensitive values masked):

const path = require('path');
const multer = require('multer');

const app = express();

// JWT secret configuration
const JWT_SECRET = 'zero-health-****r-secret-key';

// CORS configuration
app.use(cors({
    origin: true,  // Allow any origin (deliberately insecure)
    credentials: true,
    methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],

Thank you in advance for your time - I really appreciate it!

Sincerely,
Emma