sunny-green•2mo ago

auth0 error 401 unauthorized from backend

Im using auth0 for my authentication, im successfully login from auth0 and get the JWT token, but when i call API from backend im getting 401 error. but when im using JWT token from auth0 API debugger extension it success

5 Replies

kapa.ai•2mo ago

Hi @Agil. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the information provided in the knowledge sources, it seems like you're encountering an issue with JWT token authentication when using Auth0 with refine. Let's address this problem step by step: 1. First, ensure that you're correctly setting the Authorization header with the JWT token for your API requests. In refine, this is typically done in the authProvider. Here's an example of how to set the token in the check method of the authProvider:

check: async () => {
  try {
    const token = await getIdTokenClaims();
    if (token) {
      axios.defaults.headers.common = {
        Authorization: `Bearer ${token.__raw}`,
      };
      return {
        authenticated: true,
      };
    } else {
      // Handle case when token is not found
    }
  } catch (error: any) {
    // Handle errors
  }
},

check: async () => {
  try {
    const token = await getIdTokenClaims();
    if (token) {
      axios.defaults.headers.common = {
        Authorization: `Bearer ${token.__raw}`,
      };
      return {
        authenticated: true,
      };
    } else {
      // Handle case when token is not found
    }
  } catch (error: any) {
    // Handle errors
  }
},

This code snippet is from the Auth0 integration guide for refine (https://refine.dev/docs/advanced-tutorials/auth/auth0/#auth-provider). 2. If you've correctly set the token but still receive a 401 error, it's possible that the token is not being properly verified on the backend. Make sure your backend is correctly configured to verify Auth0 tokens. Here's an example of how you might verify a token on the backend:

import jwt from "jsonwebtoken";

export default function handler(req, res) {
  const { authorization } = req.headers;
  if (!authorization) {
    return res.status(401).json({ message: "Authorization header missing" });
  }

  const token = authorization.split(" ")[1];
  try {
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    req.user = decoded;
    // Proceed with the request
  } catch (error) {
    return res.status(401).json({ message: "Invalid token" });
  }
}

import jwt from "jsonwebtoken";

export default function handler(req, res) {
  const { authorization } = req.headers;
  if (!authorization) {
    return res.status(401).json({ message: "Authorization header missing" });
  }

  const token = authorization.split(" ")[1];
  try {
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    req.user = decoded;
    // Proceed with the request
  } catch (error) {
    return res.status(401).json({ message: "Invalid token" });
  }
}

This example is from the Next.js API route security guide (https://refine.dev/blog/next-js-server-actions-and-data-fetching/#bonus-securing-api-routes-in-our-nextjs-app). 3. If the token from the Auth0 API debugger extension works but the one from your application doesn't, it's possible that there's an issue with how the token is being generated or handled in your application. Double-check that you're using the correct Auth0 configuration (domain, client ID, etc.) in your application. 4. Also, ensure that the scopes and permissions associated with the token generated in your application match those of the token from the API debugger. If you've verified all these points and are still encountering issues, you may need to debug further by checking the exact error message from your backend and comparing the tokens (the one from your application vs. the one from the API debugger) to see if there are any differences. Remember, when working with JWT tokens and authentication, it's crucial to handle sensitive information securely. Always use HTTPS in production and never expose your Auth0 secret keys. If you're still unable to resolve the issue, you might want to reach out to the refine community for more specific help, as mentioned in the refine FAQ (https://refine.dev/docs/guides-concepts/faq/#why-are-there-network-errors-showing-in-the-console). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2mo ago

<@385754649585647619> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

sunny-greenOP•4w ago

@kapa.ai im using nestjs as a backend,

import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy, ExtractJwt } from 'passport-jwt';
import { AdminService } from 'src/admin/admin.service';
import { passportJwtSecret } from 'jwks-rsa';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(private adminService: AdminService) {


    super({
      secretOrKeyProvider: passportJwtSecret({
        jwksUri: `${process.env.AUTH0_ISSUER_URL}/.well-known/jwks.json`,
      }),

      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      audience: 'http://localhost:3000',
      issuer: `${process.env.AUTH0_ISSUER_URL}/`,
      algorithms: ['RS256'],
    });
    console.log(process.env.AUTH0_AUDIENCE, process.env.AUTH0_ISSUER_URL);
  }

import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy, ExtractJwt } from 'passport-jwt';
import { AdminService } from 'src/admin/admin.service';
import { passportJwtSecret } from 'jwks-rsa';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(private adminService: AdminService) {


    super({
      secretOrKeyProvider: passportJwtSecret({
        jwksUri: `${process.env.AUTH0_ISSUER_URL}/.well-known/jwks.json`,
      }),

      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      audience: 'http://localhost:3000',
      issuer: `${process.env.AUTH0_ISSUER_URL}/`,
      algorithms: ['RS256'],
    });
    console.log(process.env.AUTH0_AUDIENCE, process.env.AUTH0_ISSUER_URL);
  }

@kapa.ai im using nestjs as a backend,

import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy, ExtractJwt } from 'passport-jwt';
import { AdminService } from 'src/admin/admin.service';
import { passportJwtSecret } from 'jwks-rsa';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(private adminService: AdminService) {


    super({
      secretOrKeyProvider: passportJwtSecret({
        jwksUri: `${process.env.AUTH0_ISSUER_URL}/.well-known/jwks.json`,
      }),

      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      audience: 'http://localhost:3000',
      issuer: `${process.env.AUTH0_ISSUER_URL}/`,
      algorithms: ['RS256'],
    });
    console.log(process.env.AUTH0_AUDIENCE, process.env.AUTH0_ISSUER_URL);
  }

import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy, ExtractJwt } from 'passport-jwt';
import { AdminService } from 'src/admin/admin.service';
import { passportJwtSecret } from 'jwks-rsa';

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor(private adminService: AdminService) {


    super({
      secretOrKeyProvider: passportJwtSecret({
        jwksUri: `${process.env.AUTH0_ISSUER_URL}/.well-known/jwks.json`,
      }),

      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      audience: 'http://localhost:3000',
      issuer: `${process.env.AUTH0_ISSUER_URL}/`,
      algorithms: ['RS256'],
    });
    console.log(process.env.AUTH0_AUDIENCE, process.env.AUTH0_ISSUER_URL);
  }

ambitious-aqua•4w ago

hello @Agil, did you send your jwt token with auth headers? which data-provider are you using?

sunny-greenOP•4w ago

solved, thank you

auth0 error 401 unauthorized from backend

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