Spring Security Authorization Bypass for Case Sensitive Comparisons

The usage of String.toLowerCase and String.toUpperCase has some Locale dependent exceptions that could potentially result in authorization rules not working properly. Related to CVE-2024-38820...

Spring AI - Structured Output

UPDATE: 04.06.2024 Adde snippets for using structured output with the new, fluent ChatClient API . UPDATE: 17.05.2024 Generic Types support for BeanOutputConverter added. Science works with chunks and bits and pieces of things with the continuity presumed, and Art works only with the continuities...

A Bootiful Podcast: Spring Security legend Laura Spilca joins us to talk Spring Authorization Server and upgrading to Spring Boot 3

Hi, Spring fans! This week, my first as an employee of Broadcom, I am joined by Spring Security community legend Laura Spilca and we talk about all things security, OAuth, and more...

A Bootiful Podcast: Avalara's Kumaresan Muthaliar on GraphQL in the heavily regulated, data intensive domain of tax

Hi, Spring fans! In this installment Josh Long @starbuxman talks to Kumaresan Muthaliar, senior technical lead at Avalara, about GraphQL in the heavily regulated, data intensive domain of tax...

This Week in Spring - December 20th, 2022

Hi, Spring fans! Its the 20th of December, 2022 as I write this, which means that by the time we meet again, here on this humble blog, Tuesday next week, Christmas will already have come and gone. Chanukah is already here! Time is sure flying! So, to those of you who celebrate: Happy Chanukah,...

Introducing Experimental Spring Support for Apache Pulsar

We are happy to announce that we are incubating a new experimental Spring project for Apache Pulsar. This project aims to provide Spring-friendly APIs, building blocks, and programming models for writing Java applications that interact with Apache Pulsar. Apache Pulsar is a popular messaging syst...

Self-Correcting Structured Output in Spring AI 2.0

Large language models are text-in, text-out systems — their interface is natural language. Natural language is a great interface for humans and a poor one for software. The moment downstream code needs to route on a field, persist a value, or branch on a result, the conversation has to become a...

Potential Security Misconfiguration when Using withIssuerLocation

When an application configures JWT decoding with NimbusJwtDecoder or NimbusReactiveJwtDecoder , it must configure an OAuth2TokenValidator separately, for example by calling setJwtValidator . This is easy to miss when using NimbusJwtDecoderwithIssuerLocation or...

This Week in Spring - February 17th, 2026

Hi, Spring fans! Welcome to another rip-roaring installment of This Week in Spring! It's Lunar New Year or Chinese New Year for billions of people around the world and to those who celebrate, Happy Chinese/Lunar New Year 新年快乐! Or Happy Spring Festival 春节快乐! My favorite kind of festival! In honor ...

Anthropic Agent Skills Support in Spring AI

In this blog, we show how using Spring AI, we can integrate with Anthropic's Native Skills API for Cloud-Based Document Generation and Custom Skills. Spring AI adds support for Anthropic's Agent Skills — modular capabilities that let Claude generate actual files rather than text descriptions. Wit...

This Week in Spring - July 22nd, 2025

Hi, Spring fans! It's almost SpringOne time!! AAAAH it's all moving so quickly! I can hardly stand it. SpringOne's next month, in lovely Las Vegas, and I'll be there. Will you? Have you registered? We'll be looking at the impending Spring Boot 4.0 and Spring Framework 7.0 releases! It's going to ...

This Week in Spring - February 6th

Hi, Spring fans! Welcome to another installment of the rip-roarin' adventure that is This Week in Spring! We've got a lot to look at, as usual, so let's dive right into it! in last week's installment of A Bootiful Podcast, I talked to Gunnar Morling, who created the 1BRC 1 Billion Row Challenge...

This Week in Spring - June 27th, 2023

Hi Spring fans! Welcome to another installment of This Week in Spring! This week I am in Seoul talking to developers about the latest-and-greatest in Spring Boot 3! There's so much great stuff coming, and so much great stuff already. There are a few things I'm super excited about. First, yesterda...

This Week in Spring - April 18th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! This week, I just returned from Western Europe for Devoxx FR Paris and Kotlin Conf Amsterdam. I went home, saw my family, did some laundry, and then turned right back around to head to Chicago, Illinois, for a special joint...

Spring Modulith 0.3 released

Hot on the heels of Spring Boot 3.0.2, I am excited to announce the 0.3 release of Spring Modulith. The release is packed with improvements. We have tweaked a couple of things that might require your attention and a couple of adapting changes to your code. The most notable changes are: GH-114 – W...

My SpringOne 2022

It has taken me an embarrassingly long time to appreciate and understand that the devil is in the details regarding software development. Writing happy-path business logic isnt the hard part! Its the failure cases, observability, resilience, and process. Its security and other so-called...

cve-2026-41862 - HIGH - Kryo deserialization of persisted context without class allowlist

cve-2026-41862 - HIGH - Kryo deserialization of persisted context without class allowlist...

This Week in Spring - January 20th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's already the 20th of January and we are off on yet another rip roarin' adventure as we look at the week that has been... this week in Spring! even more good stuff from Spring AI team legend Christian Tsolov, this one on...

Introducing Spring AI Amazon Bedrock Nova Integration via Converse API

The Amazon Bedrock Nova models represent a new generation of foundation models supporting a broad range of use cases, from text and image understanding to video-to-text analysis. With the Spring AI Bedrock Converse API integration, developers can seamlessly connect to these advanced Nova models a...

Producer Initiated Transactions in Spring Cloud Stream Kafka Applications

Other parts in this blog series Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications This article is part 2 of the blog series in which we look at transactions in detail with Spring Cloud Stream and Apache Kafka. We saw a general introduction to transactions in the...

This Week in Spring - March 14th, 2023

Hi, Spring fans! Happy Pi π day! And, welcome to another installment of This Week in Spring! It's pouring cats and dogs here in San Francisco! The news is talking about atmospheric rivers; I don't know what that means but I don't know that I want to find out. Anyway, all that to say: I'm glad as...

This Week in Spring - March 29th, 2022

Aloha, Spring fans, from beautiful Maui, Hawaii, where I am with my family on a bit of vacation. Its our daughters Spring break and so were enjoying the family time while we can get it! I wanted to take a brief interlude in between the never-enough time on the beach and all the rum to get this...

This Week in Spring - May 26th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Coimbra, Portugal, where I just did my usual shtick on the latest and greatest in Spring Framework 7.x, Spring Boot 4.x, and Spring AI 2.x. It was a ton of fun, and I want to thank everybody who came out. Last week I w...

This Week in Spring - December 9th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I am in lovely New Jersey, the Garden State , as I write this and I spent most of the last week in New Orleans. It's been a busy week in the Spring community and beyond and so you know what that means? There's a ton of stuff ...

A Bootiful Podcast: Dan Vega on the fundamentals of software engineering

Hi, Spring fans! I'm so excited to chat with fellow Spring developer advocate Dan Vega about his new book, Fundamentals of Software Engineering...

This Week in Spring - May 6th, 2025

Hi, Spring fans! As I write this, I'm winging my way to lovely London, UK, for the amazing Devoxx UK event! I'll be looking at the wide and wonderful world of Springdom. Then, from there, it's off to Code Remix in Miami. I'll also be speaking at the Tampa JUG while I'm there, so look out! After...

Spring AI - Multimodality - Orbis Sensualium Pictus

Humans process knowledge, simultaneously across multiple modes of data inputs. The way we learn, our experiences are all multimodal. We don't have just vision, just audio and just text. These foundational principles of learning were articulated by the father of modern education John Amos Comenius...

A Bootiful Podcast: Spring Batch lead Mahmoud Ben Hassine on the latest and greatest in 2023

Hi, Spring fans! Welcome to another installment of A Bootiful Podcast! In this installment, Josh Long @starbuxman talks to Spring Batch lead Mahmoud Ben Hassine @FMBENHASSINE about the latest and greatest in Spring Batch. notes Submit your talk to SpringOne@Explore, being held August 21-24, 2023,...

This Week in Spring - January 31st, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm not going to spend too much time here in the preamble because a today's both my birthday and my late father's birthday and b I got the worst gift ever: COVID-19. Sigh. So, I'm going back to bed. Without further ado, let's...

This Week in Spring - Happy New Year 2023 edition - December 27th, 2022

Hi, Spring fans! Welcome to another installment of This Week in Spring! Its 27 December as I write this and - being honest - I couldnt be happier. Its raining outside. Im in a warm cozy office. Good music is playing. People are asleep in my home. I can hear the raindrops and wind outside the...

cve-2026-40987 - HIGH - Remote-file synchronizer in Spring Integration writes server-supplied filename under localDirectory without canonicalization

cve-2026-40987 - HIGH - Remote-file synchronizer in Spring Integration writes server-supplied filename under localDirectory without canonicalization...

Spring Office Hours Podcast: S5E15 - Upgrading Spring and OSS Security

Join Dan Vega and DaShaun Carter for the latest updates from the Spring Ecosystem. In this episode, Dan and DaShaun tackle two challenges every Spring developer faces: keeping applications up to date and staying ahead of security vulnerabilities in open source dependencies. They explore how AI...

RabbitMQ auto-configuration with an SSL bundle disables TLS hostname verification

When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker...

Spring Security JdbcOneTimeTokenService allows a one-time token to authenticate multiple sessions

Applications that explicitly configure One-Time Token login with JdbcOneTimeTokenService are vulnerable to a Time-of-check Time-of-use TOCTOU race condition. An attacker with a valid one-time token can send concurrent requests to the authentication endpoint, allowing the single-use token to be...

A Bootiful Podcast: Java Champion and hilarious friend, Richard Fichtner

Hi, Spring fans! I've been waiting for this episode for so long! Today, we're finally joined by my friend Richard Fichtner, who so took pity on my plight waiting for music to be added to the GraalVM that his company, XDev Software, created the music-maven-plugin, the best Maven plugin, ever! This...

This Week in Spring - May 13th, 2025

Hi, Spring fans! As I write this, I'm at the amazing Code Remix event in Miami well, technically Tampa, Florida. I'll also be speaking at the Tampa JUG while I'm there, so look out! After that, I'll be headed back to Europe—a wee bit further north this time—to Stockholm for the amazing JForum...

DoS via Spring MVC controller method with byte[] parameter

Spring MVC controller methods with an @RequestBody byte method parameter are vulnerable to a DoS attack...

This Week in Spring - September 17th, 2024

Hi, Spring fans! Last week I was in scintilliating Seoul, Korea, and then tantalizing Tokyo, Japan, and now I'm in marvelous Mumbai, India, at the airport, actually, headed to New Delhi, India. It's been a busy week for me and even busier a week for the community, so let's dive into it! Java 23 i...

Apache Kafka’s Exactly-Once Semantics in Spring Cloud Stream Kafka Applications

Other parts in this blog series Part 1: Introduction to Transactions in Spring Cloud Stream Kafka Applications Part 2: Producer Initiated Transactions in Spring Cloud Stream Kafka Applications Part 3: Synchronizing with External Transaction Managers in Spring Cloud Stream Kafka Applications Part ...

This Week in Spring - September 5th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! How are you? I just got back from another fabulous labor day weekend, and am headed to Oslo, Norway, for the fabulous JavaZone 2023 event. This will be my first time returning to lovely Oslo, Norway, since the pandemic! I can...

Spring Tips: go fast with Spring Boot 3.1

Hi, Spring fans! In this installment, Josh Long @coffeesoftware looks at how the new Spring Boot 3.1 release delivers incredible efficiencies for both developers and machines. Java springboot Microservices Testcontainers GraalVM Docker DockerCompose Devtools SSL...

A Bootiful Podcast: Java Champion, legendary engineer, and teacher Trisha Gee

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Java Champion, legendary engineer, and teacher Trisha Gee @trishagee bout her extraordinary career working at organizations like LMAX, MongoDB, Jetbrains, and her new books, Heads First Java, and Getting to Know IntelliJ IDEA...

This Week in Spring - August 30th, 2022

Hi, Spring fans! How are you? Howre you doin this fine tuesday morning? Im doing well, of course, because this week VMwares tentpole show - VMware Explore - is happening not even a mile from my home, here in San Francisco! And this is just the first one - therell be another show, my favorite show...

Today is the last day to submit to the SpringOne 2022 Call For Papers!

Hi, Spring fans! This year, SpringOne is back in person, and being held in my hometown of San Francisco, California, December 6th-8th. Have you registered? and today June 28th, 2022 is the last day to submit to the Call For Papers! If you have a good idea or story you want to share, submit today!...

This Week in Spring - July 14th, 2026

This Week in Spring - July 14th, 2026 In two short months, on this date in September, Java 27 will be here! Who's excited? I'm excited! I'm in delightful Denver, CO, for the amazing UberConf. I just delivered a workshop that was scheduled from 09:00 to 17:00, but it went into overtime, and we jus...

This Week in Spring - June 30th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring , a weekly recap in which we review the latest and greatest in the wide and wonderful world of Spring. You probably already knew this. I don't know if I needed to mention it. But I like to. I've been doing this every week,...

A Bootiful Podcast: My friend Francesco Ciulla on developer advocacy and more

Hi Spring fans! In this installment we talk to my friend Francesco Ciulla about the art of developer advocacy and more. Francesco Ciulla is the Head of DevRel Engineering at zerops.io...

A Bootiful Podcast: Neo4j legend Jennifer Reif

Hi, Spring fans! In this installment, I talk to Jennifer Reif, developer advocate at Neo4J, about graph RAG, graph databases, GraphQL, Neo4J, Spring Data Neo4J, and more. neo4j graphRag AI artificialintelligence...

This Week in Spring - January 13th, 2026

Hi, Spring fans, and welcome to another installment of This Week in Spring! It's the 13th of January, 2026, and it's been quite the week indeed! Let's dive right into it! Nobody, and I mean nobody , asked. So I put together a video on how to use Spring WS to build SOAP-based services in 2026. Hey...

This Week in Spring - June 3rd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I just finished recording my session with IntelliJ IDEA project lead Aleksey Stukalov about all the amazing features coming to IntelliJ IDEA to better support Java, Kotlin, and Spring developers. It went off without a hitch...