Executive brief
Spring Cloud Function, a framework used to deploy Java applications on AWS Lambda and other cloud platforms, logs sensitive configuration data and credentials in debug or trace logs. An attacker with access to application logs could extract credentials and configuration details needed to compromise cloud infrastructure or access protected resources.
Technical details
The vulnerability is an information disclosure issue where Spring Cloud Function's AWS integration component logs environment variables, request parameters, or configuration properties that may contain sensitive data (API keys, credentials, connection strings) at debug or trace log levels. The root cause appears to be insufficient redaction or filtering of sensitive fields during logging. An attacker must have read access to application logs (e.g., via log aggregation service, container logs, or CloudWatch). No authentication bypass or code execution is possible, but exposed credentials could enable lateral movement or unauthorized access to cloud resources. A patch is available in the fixed versions listed.
Affected products
- VMware Spring Cloud Function 3.2.16 and earlier, 4.2.0-4.2.7, 4.3.0-4.3.4, 5.0.0-5.0.3
Timeline
- 2026-08-27: disclosed