Security vulnerabilities and automated fixes for authorization bypass issues
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A critical authorization bypass vulnerability (CVE-2026-33186) in `google.golang.org/grpc` v1.79.1 allowed attackers to circumvent gRPC authorization policies through malformed HTTP/2 path values. The fix upgrades the dependency in `src/go/go.mod` from v1.79.1 to v1.79.3, closing a path validation gap in the `grpc-go/authz` middleware that could have exposed protected RPC endpoints to unauthorized callers.