Code Injection in Spring Cloud Gateway - CVE-2025-41243
Published: September 9, 2025
Vulnerability identifier: #VU114995
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-41243
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in Spring Cloud Gateway Server Webflux component. A remote attacker can send a specially crafted request, modify the Spring expression language property and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Spring Cloud Gateway
How to mitigate CVE-2025-41243
Install updates from vendor's website.
Spring Cloud Gateway - addressed in versions 3.1.11, 4.1.11, 4.2.5, 4.3.1