This Week in Spring - June 6th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! And what an insane week it's been! Long story short, I've spent 10-12 hours a day over the last five days migrating a dozen differnet applications and services from one GKE cluster to another, taking the time to update things...

This Week in Spring - April 25th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you? I'm en route to Bangalore, India, via Frankfurt, for the Developer Summit 2023 edition. It's going to be a ton of fun, and I hope you won't miss it! para Spring Boot 3.1.0-RC1 available now One of the most exciti...

Start from zero and scale to zero – Azure Spring Apps consumption plan

We are launching a new way to pay for Azure Spring Apps -- the consumption pricing plan. This plan is now in public preview so you can start creating and deploying apps today. This new plan is super-efficient because you can start from zero and scale to zero vCPU. You get more straightforward...

Preparing for Spring Boot 3.0

Spring Boot 2.0 was the first release in the 2.x line and was published on Feburary 28th 2018. Weve just released Spring Boot 2.7 which means that, so far, weve been maintaining the 2.x line for just over 4 years. In total weve published 95 distinct releases over that timeframe! The entire Spring...

CVE-2026-41846

CVE-2026-41846...

CVE-2026-41839

CVE-2026-41839...

Spring AI with NVIDIA LLM API

Spring AI now supports NVIDIA's Large Language Model API, offering integration with a wide range of models. By leveraging NVIDIA's OpenAI-compatible API, Spring AI allows developers to use NVIDIA's LLMs through the familiar Spring AI API. We'll explore how to configure and use the Spring AI OpenA...

This Week in Spring - June 11th, 2024

This Week in Spring - June 10th, 2024 Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Paris, France, to talk to organizations using and working with Spring. Then, next week, it's off to Krakow, Poland, for the amazing Devoxx PL event! I can't wait. If you're around,...

This Week in Spring - April 30th, 2024

Welcome to yet another amazing installment of This Week in Spring! As usual, we've got a ton of stuff to get into, so let's dive right into it! Chris Bono announces the new versions of Spring Functions Catalog and Spring Cloud Streams Applications In last week's installment of A Bootiful Podcast,...

Unleash Spring apps in a flex environment with Azure Spring Apps Consumption and Dedicated plans

In March, we introduced the Consumption pricing plan for Azure Spring Apps allowing you to start from zero and scale to zero vCPU. Today, we are thrilled to announce the public preview of the Standard Dedicated plan! The Standard Dedicated plan provides a fully managed, dedicated environment for...

Introducing Microservices Patterns with Spring Integration

Hey Spring Community! I hope you are enjoying Spring One Essentials these days. The most exciting feature for me is an Observability which is spread throughout the Spring portfolio from now on. Nevertheless, today I’d like to share with a project I’m working on since holidays, where the mentioned...

This Week in Spring - June 7th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Ive just landed in tantalizing Toronto, Canada, for the SpringOne Tour Toronto show. Im so excited to be here, at long last, after so long away from one of my favorite countries. Ill be doing two talks - my usual, Kubernetes...

CVE-2026-41838: Spring Framework Predictable Session ID in WebSocket Module

IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules...

This Week in Spring - July 1st, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's July!! This week, I'm on PTO, and as always, I'm looking for good reading material on the plane ride over for my holiday. Thank goodness for the ever-vibrant and awesome Spring community; there's tons of stuff to dive...

This Week in Spring - April 22nd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring , which I'm writing from magnificent Minneapolis, Minnesota, where I'm recording an amazing Frontend Masters course introducing Spring Boot. I love this article introducing Spring AI in JavaPro magazine Want to run an LLM...

Spring AI with Groq - a blazingly fast AI inference engine

Faster information processing not only informs - it transforms how we perceive and innovate. Spring AI, a powerful framework for integrating AI capabilities into Spring applications, now offers support for Groq - a blazingly fast AI inference engine with support for Tool/Function calling...

Spring AI with Ollama Tool Support

Earlier this week, Ollama introduced an exciting new feature: tool support for Large Language Models LLMs. Today, we're thrilled to announce that Spring AI 1.0.0-SNAPSHOT has fully embraced this powerful feature, bringing Ollama's function calling capabilities to the Spring ecosystem. Ollama's to...

A Bootiful Podcast: Spring Cloud cofounder and lead Spencer Gibb on Spring Cloud Gateway for the Servlet API in the era of Project Loom

Hi, Spring fans! In this installment, my first since I returned from two blistering hot but super fun months in Asia, I talk to Spring Cloud cofounder and lead Spencer Gibb @SpencerBGibb about the new Servlet-friendly Spring Cloud Gateway project...

Static resource cache poisoning in Spring MVC and WebFlux

Spring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources. More precisely, an application can be vulnerable when all the following are true: When all the conditions above are met, the attacker can send malicious requests and poison the resource cache wi...

Moving beyond Strings in Spring Data

If you've worked with data access in Java and especially with Spring Data for a while, then you are familiar with various Query and Update programming models. You write data access code. You refactor a property name. You run your tests. They fail. Your query strings? Still pointing to the old...

Spring AI Agentic Patterns (Part 2): AskUserQuestionTool - Agents That Clarify Before Acting

Traditional AI interactions follow a common pattern: you provide a prompt, the AI makes assumptions, and produces a response. When those assumptions don't match your needs, you're left iterating through corrections. Each assumption creates rework—wasting time and context. What if your AI agent...

This Week in Spring – December 23rd, 2025

Happy holidays, everyone! The year may be winding down, but the Spring ecosystem continues unabated. We’re now a few weeks past the generational Spring Boot 4.0 release in November, and there have been tons of releases and patches since then. There’s also equal excitement reflected in posts from...

Path traversal vulnerability on non-compliant Servlet containers

Spring Framework MVC applications can be vulnerable to a “Path Traversal Vulnerability” when deployed on a non-compliant Servlet container. An application can be vulnerable when all the following are true: We have verified that applications deployed on Apache Tomcat or Eclipse Jetty are not...

Spring Framework DataBinder Case Sensitive Match Exception (2nd update)

CVE-2024-38820 ensured Locale-independent, lowercase conversion for both the configured disallowedFields patterns and for request parameter names. However, there are still cases where it is possible to bypass the disallowedFields checks...

Spring Boot EndpointRequest.to() creates wrong matcher if actuator endpoint is not exposed

EndpointRequest.to creates a matcher for null/ if the actuator endpoint, for which the EndpointRequest has been created, is disabled or not exposed. Your application may be affected by this if all the following conditions are met: You are not affected if any of the following is true:...

This Week in Spring - May 27th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! And what a week it will be! I'm in Venice, Italy, on a little vacation, but tomorrow I begin a quick journey to beautiful Sofia, Bulgaria, where I'll be speaking at the amazing JPrime software show it's my first time speaking...

Hello, Java 22!

update I've since published a Spring Tips video on this very topic! If you'd prefer, you could watch that instead. Hi, Spring fans! Happy Java 22 release day, to those who celebrate! Did you get the bits already? Go, go, go! Java 22 is a significant improvement that I think is a worthy upgrade fo...

This Week in Spring - December 5th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! today, Spring Cloud, based on Spring Boot 3.2, goes GA! Don't miss this! I love this blog by Spring Framework legend Sébastien Deleuze on CDS with Spring Framework 6.1 I really enjoyed this discussion with Spring Security...

This is the Beginning of the End of the N+1 Problem: Introducing Single Query Loading.

TL;DR: Starting with Spring Data JDBC 3.2.0-M2, Spring Data JDBC supports Single Query Loading. Single Query Loading loads arbitrary aggregates with a single select statement. To enable Single Query Loading you need to call setSingleQueryLoadingEnabledtrue on your RelationalMappingContext. In...

Spring Tips: Vaadin Flow and Spring Boot 3

Hi, Spring fans! In this installment, we'll look at the fantastic Vaadin Flow library, which has recently been updated for Spring Boot 3, and how it can help you be happier. the code is available, as usual, here this episode features special guest Marcus Hellberg, VP developer relations from...

Spring Boot 3.0.1 available now

On behalf of the team and everyone who has contributed, Im happy to announce that Spring Boot 3.0.1 has been released and is now available from Maven Central. This release includes 54 bug fixes, documentation improvements, and dependency upgrades. Thanks to all those who have contributed with iss...

This Week in Spring - September 13th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Weve got a lot of good stuff to get to so lets dive right into it! A Bootiful Podcast: Hashicorps Rosemary Wang on securing the intersection of apps and ops with Hashicorp Vault a nice video by my colleague Dan Vega: Spring...

Ever wanted to rewrite a query in Spring Data JPA?

Sometimes, no matter how many features you try to apply, it seems impossible to get Spring Data JPA to apply every thing youd like to a query before it is sent to the EntityManager. With 3.0.0-SNAPSHOT and targeted for the next milestone release train of Spring Data, you now have the ability to g...

cve-2026-59270 - CRITICAL - Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces

cve-2026-59270 - CRITICAL - Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces...

This Week in Spring - August 11th, 2026

Hi, Spring fans! Welcome back to another lively edition of This Week in Spring! So much is always happening in the Spring world, and that’s part of what makes it so fun to follow. One of my favorite things is how much the community contributes and how great it is to connect with everyone. In earl...

CVE-2026-41842: Spring Framework Denial of Service via Versioned Resources in Spring MVC and WebFlux

Spring MVC and WebFlux applications are vulnerable to Denial of Service DoS attacks when resolving static resources. More precisely, an application can be vulnerable when all the following are true: When all the conditions above are met, an attacker can send malicious requests that are slow to...

DevTools remote secret comparison is vulnerable to timing attacks

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code executio...

Random value property source uses a weak PRNG unsuitable for secrets

Values produced by $random.value are not suitable for use as secrets. $random.uuid is not affected. $random.int and $random.long should never be used for secrets as they are numeric values with a predictable range...

Securing Spring AI MCP servers with OAuth2

Spring AI offers support for Model Context Protocol, or MCP for short, which allows AI models to interact with and access external tools and resources in a structured way. With Spring AI, developers can create their own MCP Servers and expose capabilities to AI models in just a few lines of code...

A Bootiful Podcast: José Paumard, Java Champion alumnus and Java legend, on Project Loom, Valhalla, and more, from Devnexus 2023!

Hi, Spring fans! Welcome to another installment of A Bootiful Podcast. In this installment I'll talk to legendary Oracle Java Champion alumnus, Java advocate, professor emeritus, and all around amiable fellow José Paumard, recorded at the amazing Devnexus 2023 event! José's English-language Youtu...

This Week in Spring - February 7th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's Tuesday, February 7th, 2023, as I write this and I'm so very glad to be talking to you. How're you doin'? Some housekeeping: I'll be doing more live streams over on my YT channel - join me and we'll talk shop. I'm going...

Interesting new filters on Spring Cloud Gateway 4.0

Spring Cloud Gateway 4.0 is finally here! Thanks to our community contributions we have introduced new features and interesting filters. This blog post details new noteworthy and explains some of the new filters included, how they work and how you can use it to provide more insights into your...

This Week in Spring - June 28th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Im writing this from the Big Apple, New York City! Im here for the SpringOne Tour 2022 NYC event. This is my first time back in New York City since before the pandemic and it has been so much fun. Ive been catching up with...

CVE report published for Spring Cloud Function

We have released Spring Cloud Function 3.2.6 to address the following CVE report. CVE-2202-22979: Spring Cloud Function Dos Vulnerability Please review the information in the CVE report and upgrade immediately...

CVE-2026-41841: Spring Framework Information Disclosure via Static Resource Cache in Spring MVC and WebFlux

Spring MVC and WebFlux applications are vulnerable to Information Disclosure attacks when resolving static resources. More precisely, an application can be vulnerable when all the following are true: When all the conditions above are met, an attacker can get access to a protected resource if a...

Predictable temp directory accepted without ownership verification

A local attacker on the same host as the application may be able to take control of the directory used by ApplicationTemp . When server.servlet.session.persistent is set to true and the attack persists across application restarts, this may allow the attacker to read session information and hijack...

User Attribute Enumeration when Using DaoAuthenticationProvider

If an application is using the UserDetailsisEnabled , isAccountNonExpired , or isAccountNonLocked user attributes, to enable, expire, or lock users, then DaoAuthenticationProvider 's timing attack defense can be bypassed for users who are disabled, expired, or locked...

Dynamic Tool Updates in Spring AI's Model Context Protocol

The Model Context Protocol MCP is a powerful feature in Spring AI that enables AI models to access external tools and resources through a standardized interface. One interesting capabilities of MCP is its ability to dynamically update available tools at runtime. This blog post explores how Spring...

A Bootiful Podcast: Spring Security lead Rob Winch on the amazing Spring Security 6.4 release

Hi, Spring fans! In this installment, we'll talk to the amazing Rob Winch, lead of Spring Security 6.4, about the jam-packed new release! spring springboot security java...

Introduction to Transactions in Spring Cloud Stream Kafka Applications

We are starting a new blog series that focuses on working with transactions in Spring Cloud Stream Kafka applications. This blog series covers many low-level details of writing transactional applications with Spring Cloud Stream and Apache Kafka. By the end of this blog series, we hope to give yo...