# github.com/github/github-mcp-server (Go) vulnerabilities

2 known vulnerabilities (1 high, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: v1.14.0 (Oct 2, 2026): no advisory affects it
- Newest unaffected release: v1.14.0 (Oct 2, 2026), the latest release
- Releases: 84 since v0.1.0 (Apr 4, 2025)
- Registry: https://pkg.go.dev/github.com/github/github-mcp-server
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-47427: v0.1.0-rc.1 to v1.0.5 (v1.1.0 is outside it)
- CVE-2026-48529: v0.22.0 to v1.1.1 (v1.1.2 is outside it)

## Advisories (2)

### [CVE-2026-47427](https://cve.now/CVE-2026-47427): GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler

- Severity: High 7.5
- Published: Jul 28, 2026
- Affected: fixed in 1.1.0.
- Fixed in v1.1.0 (released May 28, 2026, 61 days before disclosure).
- The latest release, v1.14.0, is not affected.

### [CVE-2026-48529](https://cve.now/CVE-2026-48529): GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

- Severity: Medium 6.0
- Published: Jun 26, 2026
- Affected: from 0.22.0, fixed in 1.1.2.
- Fixed in v1.1.2 (released May 29, 2026, 28 days before disclosure).
- The latest release, v1.14.0, is not affected.

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