Description
Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack
Remediation
References
https://github.com/vaadin/framework/pull/12188
https://github.com/vaadin/framework/pull/12190
https://vaadin.com/security/cve-2021-31403