Property Modification Vulnerability in Spring Cloud Gateway Server by Spring

CVE-2025-41243

What is CVE-2025-41243?

CVE-2025-41243 is a vulnerability found in the Spring Cloud Gateway Server, specifically within the Webflux framework. This server plays a critical role in handling requests and routing within cloud-native applications developed using the Spring ecosystem. The vulnerability allows for the modification of Spring Environment properties, which can have significant ramifications for applications relying on this server. When certain conditions are met, such as the inclusion of the Spring Boot actuator as a dependency and the exposure of unsecured actuator endpoints, attackers can manipulate application settings. This unauthorized access to configuration endpoints could potentially lead to the compromise of application integrity, enabling attackers to alter behavior in a way that could impact data security and application performance.

Potential impact of CVE-2025-41243

1. Unauthorized Configuration Changes: Exploitation of this vulnerability can allow attackers to alter application properties, leading to unintended changes in application behavior and potentially enabling further attacks.

2. Increased Attack Surface: With unsecured actuator endpoints available, the risk of other vulnerabilities being exploited increases, as attackers may leverage this entry point to gain unauthorized access to the application and its environment.

3. Data Integrity Risks: The ability to modify configuration settings can lead to issues regarding data integrity, where attackers may manipulate how data is processed or stored, ultimately posing severe risks to sensitive information management.

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