A remote code execution vulnerability in Spring Framework has sparked fears that it could have a widespread impact across enterprise environments. Spring is one of the most popular open-source frameworks for developing Java applications.
The flaw, which has since been dubbed SpringShell or Spring4Shell, came to light when a Chinese developer released a proof-of-concept (PoC) exploit on GitHub and then removed it, prompting widespread speculation about the unpatched flaw, its causes and potential impact. There was also some early confusion between this vulnerability and a different one patched Tuesday in Spring Cloud, a microservices library that’s different from the core Spring Framework. That vulnerability is tracked as CVE-2022-22963.