We've just published a new version (3.0.4.RELEASE) of the thymeleaf-extras-springsecurity3, thymeleaf-extras-springsecurity4 and thymeleaf-extras-springsecurity5 integration packages. These are bugfixing versions that should be usable as drop-in replacements of the previous 3.0.x versions.
This maintenance release includes bugfixing for users of JPMS (Java Platform Module System): declared automatic module name was invalid in previous version.
If you are currently using a version older than 3.0.3, please visit the release announcement for 3.0.3 in order to know more about new features.
See it at our ecosystem page: http://www.thymeleaf.org/ecosystem.html#thymeleaf-spring-security
Or go directly to the project's page on GitHub: https://github.com/thymeleaf/thymeleaf-extras-springsecurity
Remember our website includes an article (+ example application) "Thymeleaf + Spring Security integration basics". Check it out here: http://www.thymeleaf.org/doc/articles/springsecurity.html
And also, if you like to experiment a bit, we have two sandbox applications based on Spring Boot 2.1 (current snapshot) with Spring Security 5:
Regards,
Daniel