A Spring MVC or Spring WebFlux application running on JDK 9+ may be vulnerable to remote code execution (RCE) via data binding. The specific exploit requires the application to run on Tomcat as a WAR deployment. If the application is deployed as a Spring Boot executable jar, i.e. the default, it is not vulnerable to the exploit. However, the nature of the vulnerability is more general, and there may be other ways to exploit it.

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

In Spring Cloud Function framework, versions 4.1.x prior to 4.1.2, 4.0.x prior to 4.0.8 an application is vulnerable to a DOS attack when attempting to compose functions with non-existing functions. Specifically, an application is vulnerable when all of the following are true: User is using Spring Cloud Function Web module Affected Spring Products and Versions Spring Cloud Function Framework 4.1.0 to 4.1.2 4.0.0 to 4.0.8 References https://spring.io/security/cve-2022-22979   https://checkmarx.com/blog/spring-function-cloud-dos-cve-2022-22979-and-unintended-function-invocation/  History 2020-01-16: Initial vulnerability report published.

In Spring Framework, versions 5.2.x prior to 5.2.15 and versions 5.3.x prior to 5.3.7, a WebFlux application is vulnerable to a privilege escalation: by (re)creating the temporary storage directory, a locally authenticated malicious user can read or modify files that have been uploaded to the WebFlux application, or overwrite arbitrary files with multipart request data.