CVE-2025-41243
📋 TL;DR
CVE-2025-41243 allows attackers to modify Spring Environment properties through unsecured Spring Boot actuator endpoints in Spring Cloud Gateway Server Webflux. This vulnerability affects applications using Spring Cloud Gateway Server Webflux with exposed actuator endpoints that lack proper security controls.
💻 Affected Systems
- Spring Cloud Gateway Server Webflux
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through remote code execution by modifying critical Spring properties
Likely Case
Unauthorized configuration changes leading to service disruption or data exposure
If Mitigated
No impact if actuator endpoints are properly secured or disabled
🎯 Exploit Status
Exploitation requires network access to unsecured actuator endpoints
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Spring Security advisory for specific patched versions
Vendor Advisory: https://spring.io/security/cve-2025-41243
Restart Required: Yes
Instructions:
1. Update Spring Cloud Gateway to patched version 2. Apply Spring Security configuration to secure actuator endpoints 3. Restart application
🔧 Temporary Workarounds
Disable gateway actuator endpoint
allRemove gateway from exposed actuator endpoints
management.endpoints.web.exposure.include=health,info
Secure actuator endpoints
allAdd authentication and authorization to actuator endpoints
spring.security.user.name=admin
spring.security.user.password=securepassword
management.endpoint.health.roles=ACTUATOR
🧯 If You Can't Patch
- Disable actuator endpoints entirely by removing Spring Boot actuator dependency
- Implement network-level access controls to restrict access to actuator endpoints
🔍 How to Verify
Check if Vulnerable:
Check if application uses Spring Cloud Gateway Server Webflux, has Spring Boot actuator dependency, and has management.endpoints.web.exposure.include containing 'gateway'Check Version:
Check Spring Boot and Spring Cloud Gateway version in pom.xml or build.gradleVerify Fix Applied:
Verify actuator endpoints are either disabled or properly secured with authentication📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /actuator/gateway endpoints
- Unexpected property modification logs
Network Indicators:
- HTTP requests to actuator endpoints from unauthorized sources
SIEM Query:
source_ip NOT IN (trusted_ips) AND url_path CONTAINS '/actuator/gateway'