Privilege Escalation Affecting auth0-js package, versions <8.12.0



    Attack Complexity Low

    Threat Intelligence

    EPSS 0.22% (59th percentile)
Expand this section
7.5 high

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  • Snyk ID npm:auth0-js:20171204
  • published 7 Dec 2017
  • disclosed 4 Dec 2017
  • credit Unknown


auth0-js is a Client Side Javascript toolkit for Auth0 API.

A cross-origin vulnerability has been discovered in the Auth0 auth0.js library affecting versions < 8.12. This vulnerability allows an attacker to acquire authenticated user's tokens and invoke services on a user's behalf if the target site or application uses a popup callback page with auth0.popup.callback().