CVE-2025-41243: Spring Cloud Gateway

Critical severity, CVSS 10.0. EPSS: 3.5% chance of exploitation in the next 30 days.

Spring Cloud Gateway Server Webflux may be vulnerable to Spring Environment property modification. An application should be considered vulnerable when all the following are true: * The application is using Spring Cloud Gateway Server Webflux (Spring Cloud Gateway Server WebMVC is not vulnerable). * Spring Boot actuator is a dependency. * The Spring Cloud Gateway Server Webflux actuator web endpoint is enabled via management.endpoints.web.exposure.include=gateway. * The actuator endpoints are available to attackers. * The actuator endpoints are unsecured.

Affected products

• Spring Cloud Gateway: from 4.3, before 4.3.1 (fixed in 4.3.1); from 4.2, before 4.2.5 (fixed in 4.2.5); from 3.1, before 3.1.11 (fixed in 3.1.11)

Published 2025-09-16. Last modified 2026-06-17.