CVE-2025-41243 CRITICAL

CVE-2025-41243: Spring Expression Language property modification using Spring Cloud Gateway Server WebFlux

Vendor Spring
Product Cloud Gateway
Weakness CWE-917
Published September 16, 2025
Last update February 26, 2026

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 16, 2025 CVE published
February 26, 2026 Record updated