Threats affecting pkg:maven/org.springframework.grpc/spring-grpc

A vulnerability in Spring gRPC versions 1.0.0 through 1.0.2 allows the SecurityContext of an authenticated user to leak across requests when authorization fails. This occurs because the authenticated identity remains bound to the gRPC worker thread and can be inherited by a subsequent unauthenticated request on the same thread, potentially granting escalated permissions. The issue is fixed in version 1.0.3.

The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks. Affected versions: Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.