Guillaume Smet ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HV-1779 ( https://hibernate.atlassian.net/browse/HV-1779?atlOrigin=eyJpIjoiNzI0ZTI1... ) Re: hibernate-validator unnecessarily calls the thread-unsafe CachingJPATraversableResolverForSingleValidation in hibernate-core when validating ( https://hibernate.atlassian.net/browse/HV-1779?atlOrigin=eyJpIjoiNzI0ZTI1... ) CachingJPATraversableResolverForSingleValidation is not thread safe because it's not supposed to be. It's used to wrap the underlying TraversableResolver for a single validate call. It's all done automatically so you do not need to care about this. I don't know exactly what's happening in your case and it would be hard to say without a reproducer but you can for sure define your own traversable resolver to avoid using the default ones. The JPA one is automatically chosen if you have a JPA implementation around. If you are not validating entities, it's indeed better to avoid using it. You can find a good example of that in Quarkus for instance: * https://github.com/quarkusio/quarkus/blob/master/extensions/hibernate-val... * https://github.com/quarkusio/quarkus/blob/master/extensions/hibernate-val... Also some interesting read in the doc: * https://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_si... * https://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_si... ( https://hibernate.atlassian.net/browse/HV-1779#add-comment?atlOrigin=eyJp... ) Add Comment ( https://hibernate.atlassian.net/browse/HV-1779#add-comment?atlOrigin=eyJp... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100126- sha1:82783e0 )