JWT Secret Check — Can Anyone Forge Your Session Tokens?
DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee.
What the issue is
A hardcoded or fallback JWT secret means anyone who has seen your code can mint valid session tokens for any user — including admin.
Why AI tools generate it
AI scaffolds add `process.env.JWT_SECRET || "dev-secret"` so the app boots without configuration — which makes every session forgeable whenever the env var is missing.
How DevMeth detects it
A code scan flags jwt sign/verify calls whose secret is a string literal, and JWT secrets with `||`/`??` hardcoded fallbacks. Env-only reads are not flagged.
JWT signing secrets are hardcoded or fall back to a weak default
WHAT WE FOUND
C47 — masked sample
The fix, in three steps
Generate a 48-byte random secret, move it to your environment, delete every literal and fallback, and rotate — old tokens are forgeable.
Run a free scan and each finding carries a paste-ready fix prompt you can act on.
Try a free scanFAQ
DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee. A clear result means each known pattern was checked and found clear or not applicable for your app; it is not a guarantee of security.