Remote code execution in Spring Cloud Function by malicious Spring Expression

In Spring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions, when using routing functionality it is possible for a user to provide a specially crafted SpEL as a routing-expression that may result in remote code execution and access to local resources...

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...

Spring Cloud Gateway Code Injection Vulnerability

Applications using Spring Cloud Gateway are vulnerable to a code injection attack when the Gateway Actuator endpoint is enabled, exposed and unsecured. A remote attacker could make a maliciously crafted request that could allow arbitrary remote execution on the remote host...

Additional Log Injection in Spring Framework (follow-up to CVE-2021-22096)

In Spring Framework versions 5.3.0 - 5.3.13, 5.2.0 - 5.2.18, and older unsupported versions, it is possible for a user to provide malicious input to cause the insertion of additional log entries. This is a follow-up to CVE-2021-22096 that protects against additional types of input and in more...

Spring-AMQP Remote Denial of Service - Out of Memory Error with a Large Message Body

The Spring AMQP Message object, in its toString method, will create a new String object from the message body, regardless of its size. This can cause an OOM Error with a large message body...

Spring Cloud Netflix Hystrix Dashboard template resolution vulnerability

Applications using both spring-cloud-netflix-hystrix-dashboard and spring-boot-starter-thymeleaf expose a way to execute code submitted within the request URI path during the resolution of view templates. When a request is made at /hystrix/monitor;user-provided data , the path elements following...

Jackson Configuration Allows Code Execution with Unknown “Serialization Gadgets”

When configured to enable default typing, Jackson contained a deserialization vulnerability that could lead to arbitrary code execution. Jackson fixed this vulnerability by blacklisting known "deserialization gadgets". Spring Batch configures Jackson with global default typing enabled which means...

Dictionary attack with Spring Security queryable text encryptor

Spring Security versions 5.3.x prior to 5.3.2, 5.2.x prior to 5.2.4, 5.1.x prior to 5.1.10, 5.0.x prior to 5.0.16 and 4.2.x prior to 4.2.16 use a fixed null initialization vector with CBC Mode in the implementation of the queryable text encryptor. A malicious user with access to the data that has...

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...

RFD Attack via “Content-Disposition” Header Sourced from Request Input by Spring MVC or Spring WebFlux Application

In Spring Framework, versions 5.2.x prior to 5.2.3, versions 5.1.x prior to 5.1.13, and versions 5.0.x prior to 5.0.16, an application is vulnerable to a reflected file download RFD attack when it sets a “Content-Disposition” header in the response where the filename attribute is derived from use...

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 Batch versions 3.0.9, 4.0.1, 4.1.0, and older unsupported versions, were susceptible to XML External Entity Injection XXE when receiving XML data from untrusted sources...

This Week in Spring - July 21st, 2026

Welcome to another installment of This Week in Spring! I'm writing this while enjoying a cup of coffee from the Caribbean on a little PTO. How're you doin'? Whenever I go on PTO, I like to sit by some body of water with a coffee and a laptop nearby. I alternate between plunges in the ocean and...

Spring Framework Denial of Service via Integer Overflow in SpEL Expressions

An integer overflow vulnerability exists in the evaluation logic of the Spring Expression Language SpEL. An attacker can exploit this by supplying a specially crafted SpEL expression that triggers excessive resource consumption, resulting in a Denial of Service DoS. Specifically, an application i...

Spring Framework Cross-site Scripting via JSP Form Tags

Spring MVC applications which accept user-supplied values in the cssClass , cssErrorClass , or cssStyle attributes of JSP tags allow arbitrary HTML/JavaScript code injection, potentially resulting in a cross-site scripting XSS vulnerability...

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...

A Bootiful Podcast: Spring team engineer Dariusz Jędrzejczyk on the latest-and-greatest in the reactive world, MCP, and more

Hi, Spring fans! In this installment we talk to the Spring team engineer Dariusz Jędrzejczyk on the latest-and-greatest in the reactive world, MCP, and more...

This Week in Spring - October 21st, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm writing this from the fantastic Vaadin Create conference here in Frankfurt, Germany. What an amazing show and community. Since we last spoke, I have been in Boston; New York city; Sofia, Bulgaria; Krakow, Poland; and now...

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...

API Versioning in Spring

In this 2nd blog post of the Road to GA series highlighting major features within the Spring portfolio for the next major versions to be released in November, I’m going to focus on the upcoming API Versioning support in Spring Framework 7. Introduction API versioning is a challenging topic. Most...

This Week in Spring - August 5th, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's August 5th! Which means we're only 20 days away until SpringOne 2025! Have you registered? There's so much to cover this week, so let's dive right into it! Spring Shell 3.4.1 is out! - the new release includes a number o...

A Bootiful Podcast: engineer, CTO, teacher, and pilot Ken Sipe

Hi, Spring fans, JVM enjoyers, and cloud natives! Have I got a treat for you today! We're going to be talking to my longtime pal Ken Sipe. groovy java kotlin go rust spring jvm...

Spring Framework DataBinder Case Sensitive Match Exception

The fix for CVE-2022-22968 made disallowedFields patterns in DataBinder case insensitive. However, String.toLowerCase has some Locale dependent exceptions that could potentially result in fields not protected as expected...

This Week in Spring - September 24th, 2024

Hi, Spring fans! Welcome to another installment of This Week in Spring! I'm in delightful Dallas, TX, at the amazing JConf.dev show. Then I'm off to Germany, and then back home to do some laundry before heading out to Denver, CO, for the amazing Dev2Next show, before then heading out to Belgium f...

Spring Cloud Gateway HTTP2 Insecure TrustManager

Applications using Spring Cloud Gateway that are configured to enable HTTP2 and no key store or trusted certificates are set will be configured to use an insecure TrustManager. This makes the gateway able to connect to remote services with invalid or custom certificates...

Potential Security Bypass for customized Spring Data REST Resource

In Spring Data REST versions 3.4.0 - 3.4.13, 3.5.0 - 3.5.5, and older unsupported versions, HTTP resources implemented by custom controllers using a configured base API path and a controller type-level request mapping are additionally exposed under URIs that can potentially be exposed for...

Hystrix Dashboard Proxy In spring-cloud-netflix-hystrix-dashboard

Spring Cloud Netflix, versions 2.2.x prior to 2.2.4, versions 2.1.x prior to 2.1.6, and older unsupported versions allow applications to use the Hystrix Dashboard proxy.stream endpoint to make requests to any server reachable by the server hosting the dashboard. A malicious user, or attacker, can...

Kryo Configuration Allows Code Execution with Unknown “Serialization Gadgets”

Spring Integration framework provides Kryo Codec implementations as an alternative for Java deserialization. When Kryo is configured with default options, all unregistered classes are resolved on demand. This leads to the "deserialization gadgets" exploit when provided data contains malicious cod...

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...

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

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

cve-2026-40984 - HIGH - Micrometer HTTP server instrumentations DoS vulnerability

cve-2026-40984 - HIGH - Micrometer HTTP server instrumentations DoS vulnerability...

cve-2026-40983 - HIGH - Micrometer gRPC server instrumentation DoS vulnerability

cve-2026-40983 - HIGH - Micrometer gRPC server instrumentation DoS vulnerability...

A Bootiful Podcast: Intact's Luke Shannon

Hi, Spring fans! and happy holidays! in this installment I talk to Intact's Luke Shannon about their use of Spring, developer portals, and so much more...

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...