GHSA-58r4-h6v8-jcvm Regression in JWT Signature Validation

• RubyGems omniauth-auth0: >= 2.3.0, < 2.4.1 → fixed in 2.4.1

Overview Versions after and including `2.3.0` are improperly validating the JWT token signature when using the `JWTValidator.verify` method. Improper validation of the JWT token signature when not using the default Authorization Code Flow can allow an attacker to bypass authentication and authorization. Am I affected? You are affected by this vulnerability if all of the following conditions apply: • You are using `omniauth-auth0`. • You are using `JWTValidator.verify` method directly OR you are not authenticating using the SDK’s default Authorization Code Flow. How to fix that? Upgrade to version `2.4.1`. Will this update impact my users? The fix provided in this version will not affect your users.