DoS Via Malformed URL with Reactor Netty HTTP Server

Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response...

Additional information exposure with Spring Data JPA derived queries

This affects Spring Data JPA in versions up to and including 2.1.5, 2.0.13 and 1.11.19. Derived queries using any of the predicates ‘startingWith’, ‘endingWith’ or ‘containing’ could return more results than anticipated when a maliciously crafted query parameter value is supplied. Also, LIKE...

Incomplete fix for CVE-2013-7315 / CVE-2013-6429 (XXE)

Spring MVC's Jaxb2RootElementHttpMessageConverter also processed user provided XML and neither disabled XML external entities nor provided an option to disable them. Jaxb2RootElementHttpMessageConverter has been modified to provide an option to control the processing of XML external entities and...

Spring AI and TypeSafe Jev: Fast, Cheap, Structured Decisions

Reference documentation and GitHub repository We often need quick decision-making components in our AI applications: to pick the next step in a multi-agent system, to evaluate the inputs and outputs of a complex reasoning task, to route a request, to do input ranking and reordering. Those decisio...

CVE-2026-59318

CVE-2026-59318...

CVE-2026-59315

CVE-2026-59315...

CVE-2026-59291

CVE-2026-59291...

cve-2026-47842 - MEDIUM - Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation

cve-2026-47842 - MEDIUM - Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Correlation...

cve-2026-47893 - LOW - Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService

cve-2026-47893 - LOW - Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService...

This Week in Spring - April 28th, 2026

Hi Spring fans! Welcome to another installment of This Week in Spring! As I write this, I'm on PTO in beautiful Santorini, Greece, catching up on some news and about to cruise the islands for some sightseeing. There's nothing quite like springtime in the Mediterranean! I couldn't dream of enjoyin...

This Week in Spring - April 7th, 2026

Hi Spring fans! Welcome to another installment of This Week in Spring! It's April 7th, 2026, and I'm on the road! I started the journey for the amazing Voxxed Days Amsterdam show and am now winding my way through France. I visited Colmar, a beautiful city from which the animators on Disney's Beau...

A Bootiful Podcast: Spring Security contributor Josh Cummings on the latest-and-greatest in Spring Security 7

Hi, Spring fans! In this installment we talk to Spring Security contributor and legend Josh Cummings...

A Bootiful Podcast: Dr. Kris De Volder on developer tooling for Spring developers and AI

Hi, Spring fans! In this installment we talk to Spring tooling legend Dr. Kris De Volder on tooling, AI, and so much more...

Securing MCP Servers with Spring AI

Model Context Protocol, or MCP for short, has taken over the AI world. If you've been following our blog, you've probably read the introduction to the topic, Connect Your AI to Everything: Spring AI's MCP Boot Starters. The security aspects of MCP have been evolving fast, and the latest version o...

A Bootiful Podcast: Spring Boot and Spring Initializr legend Moritz Halbritter

Hi, Spring fans! In this installment I talk to Spring Boot and Spring Initializr legend Moritz Halbritter...

A Bootiful Podcast: Heroku's Terence Lee

Hi, Spring fans! Happy Spring Boot 3.4.0 release day to those who celebrate! Today I'm joined by both Terence Lee, from Heroku, and my friend DaShaun Carter, and we talk about platforms, buildpacks, and more. heroku paas buildpacks,...

A Bootiful Podcast: Spring creator and cofounder, Dr. Rod Johnson

In this wide-ranging interview, I finally sit down one-on-one and talk to Dr. Rod Johnson, the creator of Spring, entrepreneur, venture capitalist, engineer, father, Kotlin fan, AI researcher, and musician, about this, that, and everything in between, fresh off our recent SpringOne presentation o...

A Bootiful Podcast: Apache Skywalking’s Sheng Wu and Apache ShardingSphere’s Trista Pan

Hi, Spring fans! In this installment we're joined by two Apache luminaries Trista Pan - of Apache ShardingSphere - and Sheng Wu - of Apache Skywalking...

A Bootiful Podcast: Trifork CTO Joris Kuipers

Hi, Spring fans! In this installment, Josh Long talks to longtime Spring community legend and Trifork CTO Joris Kuipers. Happy new year!...

A Bootiful Podcast: Dr. Amanda Martin, Gradle developer advocate

Hi, Spring fans! In this installment, Josh Long @starbuxman talks with Gradle developer advocate Dr. Amanda Martin @DrAmandaLMartin...

A Bootiful Podcast: the good Dr. David Syer on the new and novel in Spring and Kubernetes

Hi, Spring fans! In this installment, Josh Long talks to Spring Boot and Spring Cloud luminary, the good Dr. @DavidSyer, about the latest and greatest on Spring and Kubernetes...

A Bootiful Podcast: Devoxx UK organizer and VoxxedDays cofounder Mark Hazell on running great conferences

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Devoxx UK organizer and Voxxed Days cofounder Mark Hazell @mrhazell...

Spring Tips: Brave, Bold, and Boring YugabyteDB

Hi, Spring fans! In this installment we dare to be boring with YugabyteDB, a distributed database that just works. Its a database that feels like PostgreSQL but scales like Apache Cassandra...

Signature Wrapping Vulnerability with spring-security-saml2-service-provider

Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an...

Authentication Leak On Redirect With Reactor Netty HttpClient

Reactor Netty HttpClient, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects...

Reactor Netty authentication leak in redirects

Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through redirects, including authorization ones. A remote unauthenticated malicious user may gain access to credentials for a different server than they have access to...

PlaintextPasswordEncoder authenticates encoded passwords that are null

Spring Security, versions 4.2.x up to 4.2.12, and older unsupported versions support plain text passwords using PlaintextPasswordEncoder. If an application using an affected version of Spring Security is leveraging PlaintextPasswordEncoder and a user has a null encoded password, a malicious user ...

Insecure Randomness When Using a SecureRandom Instance Constructed by Spring Security

Spring Security versions 4.2.x prior to 4.2.12, 5.0.x prior to 5.0.12, and 5.1.x prior to 5.1.5 contain an insecure randomness vulnerability when using SecureRandomFactoryBeansetSeed to configure a SecureRandom instance. In order to be impacted, an honest application must provide a seed and make...

XML External Entity Injection (XXE)

Spring Web Services, versions 2.4.3, 3.0.4, and older unsupported versions of all three projects, were susceptible to XML External Entity Injection XXE when receiving XML data from untrusted sources...

Spring Office Hours Podcast: S5E25 - Future of Software Development with Josh Long

Join Dan Vega and DaShaun Carter for the latest updates from the Spring Ecosystem. In this episode, Dan and DaShaun are joined by the legendary Josh Long. In this episode, we will look into the future of software development. We will also address at least one hot take that recently made the round...

A Bootiful Podcast: Michael Carducci on optimizing data for agentic workflows

Hi, Spring fans! In this episode, I sit down with Michael Carducci - software architect, magician, and knowledge graph expert—for a high-energy conversation about the future of AI. Michael breaks down why semantic data and auditable, deterministic reasoning are becoming essential for building...

CVE-2026-59319

CVE-2026-59319...

CVE-2026-59314

CVE-2026-59314...

CVE-2026-59295

CVE-2026-59295...

CVE-2026-59289

CVE-2026-59289...

cve-2026-59307 - HIGH - Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but mapper keeps stale reference

cve-2026-59307 - HIGH - Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but mapper keeps stale reference...

cve-2026-59272 - MEDIUM - Log4j2 AmqpAppender disables TLS hostname verification by default

cve-2026-59272 - MEDIUM - Log4j2 AmqpAppender disables TLS hostname verification by default...

cve-2026-41007 - HIGH - Spring HATEOAS heap exhaustion through unbounded internal caching

cve-2026-41007 - HIGH - Spring HATEOAS heap exhaustion through unbounded internal caching...

Modularizing Spring Boot

Continuing our Road to GA series, this week we're exploring the modularization effort happening with Spring Boot 4. When Spring Boot 1.0 was released in 2014, it shipped with a single spring-boot-autoconfigure jar weighing in at 182 KiB. Of course, that initial version didn't support a great deal...

Spring Session Hazelcast: Now Led by Hazelcast Team

It gives me great pleasure to announce that the Spring Session Hazelcast project will now be led by the Hazelcast Team. NOTE: This announcement is in alignment with our announcement Spring Session MongoDB: Now Led by MongoDB Team. For ten years Spring Session has provided the infrastructure for...

Core Spring Resilience Features: @ConcurrencyLimit, @Retryable, and RetryTemplate

This is the first blog post in the Road to GA series, highlighting major features within the Spring portfolio for the next major versions to be released in November of this year. Today we are proud to announce the new resilience features coming in Spring Framework 7.0: concurrency throttling and...

A Bootiful Podcast: Java Champion, Tessl Devrel head, friend, Virtual JUG co-founder Simon Maple

Hi, Spring fans! In this episode, we catch up with Java Champion, Tessl Devrel head, Virtual JUG co-founder, and friend Simon Maple! This episode was recorded at the amazing ArcOfAI conference held in amazing Austin, TX!...

A Bootiful Podcast: Jonatan Ivanov, observability legend on the Micrometer team

Hi, Spring fans! In this installment we talk to one of the Willy Wonka's of observability, the amazing Jonatan Ivanov! This episode was recorded at ConFoo 2025...

A Bootiful Podcast: New York Java SIG chair and founder Frank Greco on community, AI, and more

Hi, Spring fans! In this installment, I talk to New York Java SIG chair and founder Frank Greco about AI, safety, Java, community, and more!...

A Bootiful Podcast: Oracle Java Developer Advocate Billy Korando on Java 23, Structured Concurrency, and more

Hi, Spring fans! In this installment I talk to Java Developer advocate at Oracle, Billy Korando, about the amazing new features in Java 23 and beyond!...

A Bootiful Podcast: Sébastien Deleuze on Spring Framework and Kotlin, GraalVM, Project Leyden, AppCDS, runtime efficiency, Kotlin, and more

Dive deep into the world of Spring Framework and Kotlin, GraalVM, Project Leyden, AppCDS, runtime efficiency, Kotlin, and more, with the one and only Sébastien Deleuze! From runtime efficiency to all things Kotlin, this episode is packed with expert insights and valuable information. Don't miss o...

Spring Tips: the Exposed ORM for Kotlin

Hi, Spring fans! In this installment we look at the Exposed Object Relational Mapper framework for Kotlin. Kotlin Java JDBC springboot...

A Bootiful Podcast: Oracle Java Developer Advocate Nicolai Parlog on the latest and greatest in Java

Hi, Spring fans! In this installment, I talk to Oracle Java Developer Advocate Nicolai Parlog on the latest and greatest in Java...

A Bootiful Podcast: Kubernetes guru Leigh Capili helps us ring in the new year

Hi, Spring fans! And Happy new year! In this episode I talk to Kubernetes guru Leigh Capili, who helps us ring in the new year!...

A Bootiful Podcast: Java Language Architect Brian Goetz

Hi, Spring fans! Are you using Java 21 in production already? No? you should listen to this episode. Yes? Then you should listen to this episode! This week, Josh Long talks to legendary Java Language Architect Brian Goetz @BrianGoetz recaping the latest-and-greatest and previewing Java.next...