Understanding CVE-2026-47879: Arbitrary Spring Resource Locations in Spring Cloud Gateway
This educational analysis covers CVE-2026-47879, a high-severity vulnerability in Spring Cloud Gateway that allows arbitrary Spring Resource locations for defining the proto descriptor. The vulnerability affects multiple versions of Spring Cloud Gateway and has a CVSS score of 7.7. We will delve into the root cause, attack surface, exploitation mechanics, real-world impact, detection, and defense strategies.