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CVE-2026-84304 - gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

CVE ID : CVE-2026-84304 Published : Sept. 1, 2026, 6:19 p. m. • 57 minutes ago Description : 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. Severity: 0.0 • NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...

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