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`decode`/`verify` throw up `Error`s thrown by `jws.decode`

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#837 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
42/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, node.js

Research direction

Start by reproducing the malformed token case with jwt.verify using the issue's example, then trace how verify reaches decode and how jws.decode errors are propagated. Done means malformed input consistently produces JsonWebTokenError rather than a generic Error, with the behavior covered by the relevant existing tests.

Written by the indexing model from the issue text.

Description

Description

Sometimes decode, and in turn - verify, will throw Error instead of JsonWebTokenError. That makes it hard to distinguish errors in the calling code.

Reproduction
var jwt = require("jsonwebtoken")
const malformed_token='notbase64atall';

jwt.verify(
        malformed_token,
        'Secret',
        {
          algorithms: [ 'HS256' ],
        }
      );
Environment
  • Version of this library used: 8.5.1
  • Version of the platform or framework used, if applicable: https://github.com/auth0/node-jsonwebtoken/
  • Other relevant versions (language, server software, OS, browser): NodeJS v10.20.1 (shouldn't be related)
  • Other modules/plugins/libraries that might be involved: using it from NestJS project
Dominant language
JavaScript
Stars
18.2k
Forks
1.3k
PR merge metrics
No merged PRs in 30d

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