The Jakarta Security identity store backed by the Tomcat user database compares the supplied password with the stored value as plain text and ignores the configured credential handler. When digested passwords are stored, an attacker who obtained a stored digest, for example from a leaked users file or backup, can authenticate with the digest instead of the password. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue.