Replace a weak JWT signing secret

jwt-weak-secret

Your JWT signing secret is short enough to crack offline. Whoever recovers it can mint a token for any account. Rotate to a long random secret.

Why this matters

Your site's JWT token is signed with a weak or guessable secret. Anyone can forge valid authentication tokens and impersonate any user on your site.

Your stack

Frameworks

Express Django Laravel Spring Boot

Express

1 Rotate the JWT secret immediately
2 Generate a strong random secret (at least 256 bits)
3 Store it in environment variables, never in code

bash

# Generate a strong secret
node -e "console.log(require('crypto').randomBytes(64).toString('hex'))"

# .env
JWT_SECRET=<paste the generated secret>

# In code
const jwt = require('jsonwebtoken');
const token = jwt.sign(payload, process.env.JWT_SECRET);

Django

1 Rotate SECRET_KEY and any JWT-specific secrets

bash

# Generate a new secret
python -c "from django.core.management.utils import get_random_secret_key; print(get_random_secret_key())"

# settings.py
SECRET_KEY = os.environ.get('SECRET_KEY')

Spring Boot

1 Rotate the JWT signing key
2 Use at least a 256-bit key for HMAC-SHA256

properties

# application.properties
jwt.secret=${JWT_SECRET}  # from environment

# Generate: openssl rand -base64 64

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