Expression Language Injection Affecting org.springframework.cloud:spring-cloud-gateway-server package, versions [,4.2.5)[4.3.0,4.3.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Expression Language Injection vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JAVA-ORGSPRINGFRAMEWORKCLOUD-12591534
- published10 Sept 2025
- disclosed8 Sept 2025
- creditEzzer17
Introduced: 8 Sep 2025
NewCVE-2025-41243 (opens in a new tab)How to fix?
Upgrade org.springframework.cloud:spring-cloud-gateway-server to version 4.2.5, 4.3.1 or higher.
Overview
Affected versions of this package are vulnerable to Expression Language Injection in the GatewayEvaluationContext method, which allows property modification that in turn enables code execution.
Only Webflux applications are vulnerable, not WebMVC applications. Additionally, the following conditions must be true to render an application 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.