Spring Cloud Gateway Server Webflux is vulnerable to Expression Language Injection
The following versions of Spring Cloud Gateway Server Webflux may be vulnerable to the ability to expose environment variables and system properties to attackers.
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).
- An admin or untrusted third party using Spring Expression Language (SpEL) to access environment variables or system properties via routes.
- An untrusted third party could create a route that uses SpEL to access environment variables or system properties if: * The Spring Cloud Gateway Server Webflux actuator web endpoint is enabled via management.endpoints.web.exposure.include=gateway and management.endpoint.gateway.enabled=trueor management.endpoint.gateway.access=unrestricte.
- The actuator endpoints are available to attackers.
- The actuator endpoints are unsecured.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.springframework.cloud:spring-cloud-gateway-server | >= 4.3.0, < 4.3.2, >= 4.2.0, < 4.2.6, >= 4.0.0, <= 4.1.9, <= 3.1.10 | 4.3.2, 4.2.6 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-917- Platform
- Java / Kotlin (Maven)
- Package
org.springframework.cloud:spring-cloud-gateway-server- Disclosed
- 16.10.2025
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-fwxx-wv44-7qfg - CC BY 4.0
Vulnerability history: org.springframework.cloud:spring-cloud-gateway-server
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 05.2025 10.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2025: 2
- 2026: 0
-
Spring Cloud Gateway Server Webflux is vulnerable to Expression Language Injection this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.