Dear Spring community,

On behalf of the team and everyone who contributed, it is my pleasure to announce a number of maintenance releases for Spring Integration. Mostly these versions contain bug fixes and dependency upgrades.

CVE-2020-5413

The Spring Integration framework provides Kryo Codec implementations as an alternative for Java (de)serialization. When Kryo is configured with default options, all unregistered classes are resolved on demand. This leads to the "deserialization gadgets" exploit when the incoming data contains malicious code for execution during deserialization.

In order to protect against this type of attack, Kryo can be configured to require a set of trusted classes for (de)serialization. Spring Integration calls kryo.setRegistrationRequired(true); (trust no one) by default and pre-configures out-of-the-box Message<?> implementations as trusted classes. All other types have to be registered with Kryo using any available KryoRegistrar strategy injected into a PojoCodec…

On behalf of the team and everyone who has contributed, I am pleased to announce a full round of Spring Framework releases.

Spring Framework 5.2.8 includes 36 fixes and improvements. Spring Framework 5.1.17 includes 15 selected fixes and improvements.

The maintenance release for 5.0.x (5.0.18) ships with 13 selected fixes and improvements. The 4.3.x branch (4.3.28) also ships with 13 selected fixes and improvements, including a CORS configuration change (see gh-25414 and the CORS section of the reference documentation for more details).

As usual, we'll follow up shortly with corresponding Spring Boot releases (2.3.2, 2.2.9 and 2.1.16…

On behalf of the team and everyone who has contributed, I’m happy to announce that Spring Initializr 0.9.0 has been released and is now available from repo.spring.io and Maven Central.

This release includes 34 fixes, improvements and dependency upgrades. Thanks to all those who have contributed with issue reports and pull requests.

For full upgrade instructions and new and noteworthy features please see the release notes.

GitHub | Issues | Documentation | Stack Overflow | Gitter

We are happy to announce the release of Spring Cloud Stream applications 2020.0.0-M2. This release is a complete overhaul of the legacy Spring Cloud Stream App Starters. Starting with this release, we are moving away from theme-oriented release train names (famous scientists in alphabetical order) to calendar based versioning. The current GA release is called Einstein, and we are pleased to introduce 2020.0.0-M2. We are also moving away from the app starters. Having reorganized, repackaged, and (in some cases) rewritten the underlying code, we now have a new Git repository: spring-cloud/stream…

On behalf of the community, I’m pleased to announce the release of Spring Security 5.4.0-M2! You can find the complete details in the release notes and the highlights below:

OAuth 2.0

gh-8700 - OAuth2AuthorizedClientArgumentResolver picks up OAuth2AuthorizedClientManager bean

gh-8730 - Add JWTProcessor Configuration Post-Processor

gh-8669 - OAuth2AuthorizedClientArgumentResolver for XML

gh-8587 - Add ServerRequestCache setter in OAuth2AuthorizationCodeGrantWebFilter

gh-8603 - oauth2Client Test Support no longer requires an HttpSessionOAuth2AuthorizedClientRepository

gh-8501 - Add issuerUri to…

Dear Spring community,

On behalf of the team and everyone who contributed, it is my pleasure to announce the first milestone for Spring Integration 5.4 generation.

It can be downloaded from our milestone repository:

compile 'org.springframework.integration:spring-integration-core:5.4.0-M1'

The Spring Integration 5.4 generation is full based on recently released Spring Framework 5.3 M1 including all the deprecation resolutions, removal some obsolete API and aggressive upgrade the latest versions for dependencies.

Long-waiting community request has been fulfilled and now Spring Integration…

On behalf of the team and everyone that contributed, I am pleased to announce that the first milestone of Spring Boot 2.4 has been released and is available from our milestone repository. This release closes over 120 issues and pull requests.

Please note the slight change in the format of the version. 2.4.0-M1 is the first Spring Boot release to use the new versioning scheme.

With Spring Boot 2.4, we have switched to a 6-month release cadence. All being well, you can expect to see 2.4.0 reach general availability in October or November.

Highlights of this first milestone include:

• Preliminary support for JDK 15
• Spring Batch 4.3 M1
• Spring Data 2020.0 M1
• Spring Framework 5.3 M1
• Spring Security 5.4 M1
• Filtered metric scraping with Prometheus
• Numerous other dependency upgrades
…

On behalf of the Spring Batch team, I am pleased to announce that Spring Batch 4.3.0-M1 is now available from our milestone repository.

What’s new?

This release is packed with new features, performance improvements, and bug fixes, as well as documentation and dependency updates! You can find the complete list of changes in the release notes, but here are the major highlights:

New features

1. New synchronized ItemStreamWriter

Similar to the SynchronizedItemStreamReader, we added a SynchronizedItemStreamWriter. This feature is useful in multi-threaded steps where concurrent threads need to be…

Dear Spring community,

On behalf of the team and everyone who contributed, it is my pleasure to announce that Spring Framework 5.3 M1 is available from our milestone repository now! Find an initial list of new features and refinements and corresponding upgrade notes including several deprecations on our wiki.

Please note that 5.3 is designed as the final 5.x feature release, wrapping up the major themes in the Spring Framework 5 generation, in particular reactive programming and Kotlin support, while also taking GraalVM compatibility to the next level. Last but not least, we are not only…