build1 publisher
A leftover localhost callback lets Cognito hand OAuth tokens to whatever binds port 3000
Cognito validates the redirect target by matching it against the app client's allowed callback list, so a development entry nobody removed is a valid destination for an authorization code, or for the tokens themselves where implicit grant is still on.
Publishers:dev.to
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+35
- Incentives35
- Confidence50