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Published: January 31, 2020 CVE number: CVE-2019-20173 Credit: Muhamad Visat

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Overview

The WordPress Plugin for Auth0 versions 3.11.0, 3.11.1, and 3.11.2 do not properly sanitize the wle query parameter. This could allow an attacker to run a cross-site scripting (XSS) attack on the login page.

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Am I affected?

You are affected by this vulnerability if all of the following apply:
  • You are using the WordPress Plugin for Auth0 versions 3.11.0, 3.11.1, or 3.11.2
  • The “Original Login Form on wp-login.php” setting under Basic settings is set to either of the two options:
    • “Via a link under the Auth0 form” (default option)
    • “When “wle” query parameter is present”

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How to fix that?

Developers using WordPress Plugin for Auth0 need to upgrade to version 3.11.3 or later.

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Will this update impact my users?

No. This fix patches the library that your application runs, but will not impact your users, their current state, or any existing sessions.