Skip to main content

Over 150 LLM Providers · Over 5,300 Models The most extensible AI-powered pentesting platform. Open source. Star on GitHub

CVE-2026-84304

Published Sep 1, 2026 CWE-400 EPSS 0.41% (35th pctl)

Overview

CVE-2026-84304 is a known-severity vulnerability. It was published on September 1, 2026.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/grpc/grpc-go/commit/7354d9c8debb4bcf2225bf429857078de310c176 GitHub github.com/grpc/grpc-go/commit/8cfeca0e1ee5ea0980dcc320e20240fa1079ec77 GitHub github.com/grpc/grpc-go/pull/9331 GitHub github.com/grpc/grpc-go/pull/9333 GitHub github.com/grpc/grpc-go/releases/tag/v1.83.1 GitHub github.com/grpc/grpc-go/security/advisories/GHSA-vp52-pcj8-j9qc

Frequently Asked Questions

What is CVE-2026-84304?

CVE-2026-84304 is a known-severity vulnerability. It was published on September 1, 2026.

How severe is CVE-2026-84304?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-84304?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-84304?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-84304 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.
Code Review

AI-driven PR review catches vulnerable dependencies before they ship.
HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
Browse by year 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999