As the title suggests, I did not transmit the query parameter 'host' during the get request, but he inexplicably bound a host for me 97d66415bd2c4019d4e313de5b794bf 7b91297bc4883b17b9995caa86acbae

Comment From: twelvet-s

I only switched back to Spring Boot 3.3.6 without any other changes, and this issue disappeared. Can it be considered a parameter binding bug in 3.4.0

Comment From: bclozel

Duplicates https://github.com/spring-projects/spring-framework/issues/34039