HIGH 8.7 NVD
CVE-2026-84304
gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvM
gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvMsg in recvBuffer, so millions of one-byte frames can consume disproportionate heap memory even when payload bytes remain within connection and stream flow-control windows. An unauthenticated remote attacker can use concurrent multiplexed streams to exhaust process memory and cause a runtime panic or out-of-memory termination. Receive-buffer compaction is enabled by default and can be controlled temporarily with GRPC_GO_EXPERIMENTAL_ENABLE_RECEIVE_BUFFER_COMPACTION. This issue is fixed in version 1.83.1.
References
- https://github.com/grpc/grpc-go/commit/7354d9c8debb4bcf2225bf429857078de310c176
- https://github.com/grpc/grpc-go/commit/8cfeca0e1ee5ea0980dcc320e20240fa1079ec77
- https://github.com/grpc/grpc-go/pull/9331
- https://github.com/grpc/grpc-go/pull/9333
- https://github.com/grpc/grpc-go/releases/tag/v1.83.1
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-01 via NVD.
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