Timing Attack Affecting com.vaadin:vaadin-server Open this link in a new tab package, versions [8.0.0,8.12.3) [7.0.0,7.7.24)

  • Attack Complexity


Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • snyk-id


  • published

    21 Apr 2021

  • disclosed

    19 Apr 2021

  • credit

    Xhelal Likaj

How to fix?

Upgrade com.vaadin:vaadin-server to version 8.12.3, 7.7.24 or higher.


com.vaadin:vaadin-server is a Java framework for modern Java web applications.

Affected versions of this package are vulnerable to Timing Attack. Non-constant-time comparison of CSRF tokens in the UIDL request handler allows an attacker to guess a security token via timing attack.