I am trying to upgrade my Tomcat to 11 from 10.1.28. Current Spring Boot version is 3.3.3.
Security team wants Tomcat to be upgraded to version 11. Anyone know if the latest release of Springboot 3.5 have offical support with tomcat 11.x
As you said: no official support. You’ll likely want to wait and upgrade to Spring Boot 4.0 to use Tomcat 11 with confidence. Tomcat 11 targets Jakarta EE 11, which requires Spring Framework 7, meaning Spring Boot 4 (Spring blog post). I myself do have good experiences using „not officially supported combinations“ of older versions of Spring, Tomcat etc. but it is always better (or required) to have someone signing off on the compatibility, especially if security is a main concern and driver behind an upgrade.
Of course, you and your security team know that Tomcat 10 is fully supported including security patches. No need to rush, in my eyes.