BCrypt skips salt rounds for work factor of 31

Spring Security versions 5.5.x prior to 5.5.7, 5.6.x prior to 5.6.4, and earlier unsupported versions contain an integer overflow vulnerability. When using the BCrypt class with the maximum work factor 31, the encoder does not perform any salt rounds, due to an integer overflow error. The default...

A Bootiful Podcast: Simon Ritter, Java Champion and deputy CTO at Azul

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Azul Deputy CTO and Javas own mad scientist and luminary Simon Ritter @speakjava...

Spring Expression DoS Vulnerability

In Spring Framework versions 5.3.0 - 5.3.16, 5.2.0 - 5.2.19, and older unsupported versions, it is possible for a user to provide a specially crafted SpEL expression that may cause a denial of service condition...

Building Native Images with GraalVM and Spring Native on Apple's M1 Architecture

It finally happened! They did it! They did it just in time for me to get on the road and start building applications on the road with my shiny new laptop, too! JOY!! Oracle and the GraalVM team released GraalVM and the GraalVM native image capability for Apple M1! Ive been waiting for this day fo...

Remote Code Execution with spring-security-oauth2

Spring Security OAuth, versions 2.3 prior to 2.3.3 and 2.2 prior to 2.2.2 and 2.1 prior to 2.1.2 and 2.0 prior to 2.0.15 and older unsupported versions, contains a remote code execution vulnerability. A malicious user or attacker can craft an authorization request to the authorization endpoint th...

RCE in PATCH requests in Spring Data REST

Malicious PATCH requests submitted to servers using Spring Data REST backed HTTP resources can use specially crafted JSON data to run arbitrary Java code...

Remote Code Execution in Spring AMQP

The class org.springframework.core.serializer.DefaultDeserializer does not validate the deserialized object against a whitelist. By supplying a crafted serialized object like Chris Frohoff's Commons Collection gadget, remote code execution can be achieved...

A Bootiful Podcast: JReleaser creator and fellow Java Champion Andres Almiray

Hi, Spring fans! What if the JVM could feel as frictionless as the modern dev tools people rave about on other platforms? In this wide-ranging, high-energy conversation, you’ll hear two longtime friends Andres Almiray is a fellow Java champion and a legend geek out over the future of desktop Java...

A Bootiful Podcast: BellSoft's Catherine Edelveis on hardened runtime images, container security, and more

Hi, Spring fans! I chat with BellSoft’s Catherine Edelweiss about using buildpacks and hardened images to ship Spring Boot apps with stronger security, cleaner defaults, and far less Dockerfile pain. BellSoft Docker Java JRE SpringBoot...

CVE-2026-41855

CVE-2026-41855...

cve-2026-59326 - LOW - CVE-2026-59326: HTTP Proxy Credentials Logged in Plaintext by the Spring Boot Language Server

The Spring Boot language server logs the raw value of the httpsproxy / HTTPSPROXY / httpproxy / HTTPPROXY environment variable at INFO level whenever it creates an outbound HTTP client and no explicit http.proxy workspace setting is configured. Corporate proxy URLs frequently embed Basic-auth...

A Bootiful Podcast: Russ Miles on Safer, More Productive Interactions with AI

I’m joined, I think, for the second time by my friend, the legendary architect and developer extraordinaire Russ Miles, who has given some of the most cerebral and exciting Spring keynotes and talks ever. And this time, he’s back to talk about — guess what — A.I. As usual, he’s got a different an...

cve-2026-41837 - MEDIUM - Spring Data REST Querydsl integration exposes Jackson-hidden persistent fields as filter keys

cve-2026-41837 - MEDIUM - Spring Data REST Querydsl integration exposes Jackson-hidden persistent fields as filter keys...

A Bootiful Podcast: Hadi Hariri, Jetbrains legend

Hi Spring and Kotlin fans! In this installment, I have the privilege of talking to my old friend and JetBrains legend Hadi Hariri, recorded live from Kotlin Conf 2026 in Munich, Germany! kotlin jvm java springboot...

Spring Cloud Config Clients Can Access Secrets From Any Project The Config Server Has Access To On Google Secrets Manager

When using Google Secrets Manager as a backend for the Spring Cloud Config server a client can craft a request to the config server potentially exposing secrets from unintended GCP projects...

Spring gRPC AuthenticationException message reflected to remote client

The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks...

ONNX model cache defaults to world-writable predictable /tmp directory

In Spring AI, having access to a shared environment can expose the ONNX model used by the application. Only applications that use TransformersEmbeddingModel and have the cache enabled, using the default location, are affected...

VectorStoreChatMemoryAdvisor conversation scoping can lead to cross-tenant memory exfiltration

In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ chat histories, including secrets and credentials, by injecting filter logic through conversationId . Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input ...

A Bootiful Podcast: the legendary Craig Walls

Hi Spring fans! In this installment we talk to the legendary Craig Walls, author of Spring In Action , Spring AI in Action , and more!...

A Bootiful Podcast: Daniel Garnier-Moiroux on MCP Security

Hi Spring, AI, Spring AI, security, and Spring Security fans! In this installment I talk to the legendary Daniel-Garnier Moiroux! ai mcp security java...

Smart Tool Selection: Achieving 34-64% Token Savings with Spring AI's Dynamic Tool Discovery

As AI agents connect to more services—Slack, GitHub, Jira, MCP servers—tool libraries grow rapidly. A typical multi-server setup can easily have 50+ tools consuming 55,000+ tokens before any conversation starts. Worse, tool selection accuracy degrades when models face 30+ similarly-named tools. T...

A Bootiful Podcast: The legendary Rossen Stoyanchev on API versioning, declarative interface clients, RestTestClients, and more

Hi, Spring fans! Welcome to another installment of a Bootiful Podcast! In this installment I talk to the legendary Rossen Stoyanchev on API versioning, declarative interface clients, RestTestClients, and more!...

This Week in Spring: September 30th, 2025

Hi, Spring fans! As I write this I am about to board a flight for Colorado for the amazing Dev2Next conference! I'll be in Antwerp, Beglium for the amazing Devoxx event next week, and I'll be speaking at the Amsterdam JUG with James Ward on the Thursday after that, too! If you're around, be sure ...

Connect Your AI to Everything: Spring AI's MCP Boot Starters

The Model Context Protocol MCP standardizes how AI applications interact with external tools and resources. Spring joined the MCP ecosystem early as a key contributor, helping to develop and maintain the official MCP Java SDK that serves as the foundation for Java-based MCP implementations...

A Bootiful Podcast: Spring Cloud guru Ryan Baxter

Hi, Spring fans! In this installment we talk to the amazing Spring Cloud contributor Ryan Baxter, live from SpringOne 2025!...

This Week in Spring - September 2nd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in Frankfurt, awaiting my flight to the Java-tastic Javazone 2025 event where I'll be joined by the legendary James Ward to deliver an AI-focused look at the latest-and-greatest in Spring! And I'm still recovering from th...

A Bootiful Podcast: Andrew Lombardi, Beginning Spring AI co-author, and friend of the show

Hi, Spring fans! In this installment I am thrilled to talk to my longtime friend Andrew Lombardi about the latest-and-greatest, his new book Beginning Spring AI , and more...

Authentication Leak On Redirect With Reactor Netty HTTP Client

In some specific scenarios with chained redirects, Reactor Netty HTTP client leaks credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects...

A Bootiful Podcast: DevOps and AI luminary Patrick Debois

Hi, Spring, cloud native, and AI fans! In this installment, I had the opportunity to briefly sit down and talk with DevOps and AI luminary Patrick Debois, from the amazing Devoxx UK 2025 show...

Your First Spring AI 1.0 Application

Your First Spring AI 1.0 Application by Dr. Mark Pollack, Christian Tsolov, and Josh Long Hi, Spring fans! Spring AI is live on the Spring Initializr and everywhere fine bytes might be had. Ask your doctor if AI is right for you! It's an amazing time to be a Java and Spring developer. There's nev...

This Week in Spring - March 25th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! This week, I’m in Portland, OR, then I'm off to Austin, TX for the Arc of AI show, and then I'm off to Amsterdam for Voxxed Days Amsterdam! If you're around, be sure to say hi! There's a ton of cool stuff to look at, so witho...

Spring Security authorization bypass for method security annotations on parameterized types

Spring Security may not correctly locate method security annotations on parameterized types or methods. This may cause an authorization bypass. Your application may be affected by this if the following are true: In that case, the target method may be able to be invoked without proper authorizatio...

This Week in Spring - October 29th, 2024

Hi, Spring fans! How're things? It's almost Halloween! I'm so excited! I'm going as a PHP program. Boooooooo...t. I'm writing this from the amazing Vaadin Create conference in Frankfurt, Germany, about to do my keynote for an amazing, Spring-loving audience here. So, without further ado, let's di...

This Week in Spring - August 13th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's Tuesday and work is well underway to prepare for the huge SpringOne event in Las Vegas in just a few short week's time! I'm elated! So, let's get this roundup on the road so I can get back to the preparation frenzy...

Spring Tips: HTMX

Hi, Spring fans! HTMX is the progressive hypertext sensation that's sweeping the process of web app creation, and - thanks to a nice integration by Spring community legend Wim Deblauwe, it's easier than ever to use it with Spring Boot and Thymeleaf. And, it's the topic of today's installment! jav...

A Bootiful Podcast: Jetbrains Developer Advocate Pasha Finkelshteyn

Hi, Spring fans! In this week's installment I talk to Jetbrains' Developer Advocate Pasha Finkelshteyn...

Spring Tips: Beans, Beans: What's in a Spring bean?

Hi, Spring fans! In this installment we explore the essential Spring bean. What are they, how are they created, and what do they mean to you?...

Spring Framework URL Parsing with Host Validation (3rd report)

Applications that use UriComponentsBuilder to parse an externally provided URL e.g. through a query parameter AND perform validation checks on the host of the parsed URL may be vulnerable to a open redirect attack or to a SSRF attack if the URL is used after passing validation checks. This is the...

Spring Tips: Hello, Java 22!

Hi, Spring fana! In this installment, I look at the amazing, just-released, Java 22!...

Broken Access Control in Spring Security With Direct Use of isFullyAuthenticated

In Spring Security, versions 6.1.x prior to 6.1.7 and versions 6.2.x prior to 6.2.2, an application is vulnerable to broken access control when it directly uses the AuthenticationTrustResolver.isFullyAuthenticatedAuthentication method. Specifically, an application is vulnerable if: An application...

Spring Tips: Spring AI

Hi, Spring fans! In this installment we'll look at the new Spring AI project, which provides convenient integrations with LLMs like the one behind ChatGPT and tools to support the RAG retrieval augmented generation pipeline. ai springboot artificialintelligence java graalvm cloud java21 postgresq...

Spring Tips: Spring Data JDBC

Hi, Spring fans! In this installment, Josh Long looks at the fantastic Spring Data JDBC project, which is one of the easiest and most powerful ways to leverage JDBC in a Spring Boot application...

A Bootiful Podcast: Java Champion Ken Kousen on Gradle, Java, Kotlin, Mockito, and more

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Java Champion Ken Kousen @kenkousen, live from the Great International Developer Summit 2023 in beautiful Bangalore, India, about Gradle, the Kotlin DSL, Java, and so much more Check out Ken's awesome Youtube channel...

This Week in Spring - April 11th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! As I write this I am in Amsterdam, Netherlands, preparing to speak at the Utrecht JUG tonight along with fellow Java Champion Trisha Gee. We're not speaking together, but instead it's a double header: she'll speak first, then...

Spring Data JPA introduces query parser!

The Problem One of Spring Data JPA’s handy features is letting you plugin in custom JPA queries through its @Query annotation. This allows some flexiblity because you are still able to offer sort parameters to the consumers of your app. Check out the example below: interface SampleRepository...

Spring Expression DoS Vulnerability

In Spring Framework versions 6.0.0 - 6.0.6, 5.3.0 - 5.3.25, 5.2.0.RELEASE - 5.2.22.RELEASE, and older unsupported versions, it is possible for a user to provide a specially crafted SpEL expression that may cause a denial-of-service DoS condition...

A Bootiful Podcast: opensource, Spring Cloud, and Kubernetes maestro Abel Salgado Romero

Hi, Spring fans! In this installment, Josh Long @starbuxman talks to Abel Salgado Romero @abelsromero about open source, Kubernetes, and building Kubernetes controllers with Spring Boot and GraalVM native images...

This Week in Spring - January 17th, 2023

Hi, Spring fans! Welcome to another installment of This Week in Spring! I went to Helsinki, Finland, last week, and this week I'm in Atlanta, Georgia, to speak at the Atlanta Java User Group. And, of course, next week, I'll be in New York to join a viewing party for the airing of SpringOne...

A Bootiful Podcast: Google mad scientist Josh Suereth on Observability with OpenTelemetry, building better build tools, and so much more

Hi, Spring fans! In this installment, Josh Long @starbuxman looks at the latest and greatest in Spring Boot 3 AOT, then talks to Googles Josh Suereth @jsuereth about observability with OpenTelemetry, building better build tools, and so much more. Want to learn more about Spring Boot and the wider...

A Bootiful Podcast: Hashicorp's Rosemary Wang on securing the intersection of apps and ops with Hashicorp Vault

Hi, Spring fans! In this episode Josh Long @starbuxman talks to Hashicorp Developer Advocate Rosemary Wang @joatmon08 about a few Hashicorp technologies and their integrations with Spring Boot...