---
cve: "CVE-2026-84304"
severity: "LOW"
cvss: 3.1
epss: "5%"
vendor: "Microsoft"
kev: false
exploited: false
published: "2026-09-01 19:17:30"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T15:55:35+02:00"
---

# CVE-2026-84304

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- 7354d9c8debb4bcf2225bf429857078de310c176 (Commit)
- 8cfeca0e1ee5ea0980dcc320e20240fa1079ec77 (Commit)

## Referenzen

- <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>
- <https://github.com/grpc/grpc-go/security/advisories/GHSA-vp52-pcj8-j9qc>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-84304) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_