Private tokens could appear in logs if context containing gRPC metadata is logged in github.com/grpc/grpc-go

[shenyutong10086]

Describe the bug
This issue represents a potential PII concern. If applications were printing or logging a context containing gRPC metadata, the affected versions will contain all the metadata, which may include private information.

Steps to reproduce
The issue first appeared in 1.64.0 and is patched in 1.64.1 and 1.65.0

What did you expect to see?
If using an affected version and upgrading is not possible, ensuring you do not log or print contexts will avoid the problem.

[johnli-developer]

Please assign this to me

[johnli-developer]

The bot already created a PR #1420