CVE-2026-48529Published

GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-48529

Published

github-mcp-server

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "github",
                    "product": "github-mcp-server",
                    "versions": [
                        {
                            "version": ">= 0.22.0, < 1.1.2",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON