# github.com/googleapis/mcp-toolbox (Go) vulnerabilities

Source: https://junglewise.ai/threats/technologies/github-com-googleapis-mcp-toolbox  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/github-com-googleapis-mcp-toolbox.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in github.com/googleapis/mcp-toolbox (Go): 0 in the last 7 days and 0 in the last 90 days, 5 of them critical and 0 exploited in the wild. The most recent, CVE-2026-11720, was published on 29 June 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 6 (5 critical, 0 exploited in the wild)

## About github.com/googleapis/mcp-toolbox (Go)

A Go package providing tools for the Model Context Protocol.

## Latest github.com/googleapis/mcp-toolbox (Go) vulnerabilities

- [CVE-2026-11720: Google MCP Toolbox path traversal in HTTP tool URL builder](https://junglewise.ai/threats/cve-2026-11720-google-mcp-toolbox-path-traversal-in-http-tool-url-builder) (critical, CVSS 9.1, published 29 Jun 2026)
- [CVE-2026-11719: Google MCP Toolbox for Databases authorization bypass in protocol handlers](https://junglewise.ai/threats/cve-2026-11719-google-mcp-toolbox-for-databases-authorization-bypass-in-protocol) (high, CVSS 4, published 18 Jun 2026)
- [CVE-2026-11718: Google MCP Toolbox authentication bypass in validateOpaqueToken](https://junglewise.ai/threats/cve-2026-11718-google-mcp-toolbox-authentication-bypass-in-validateopaquetoken) (critical, CVSS 4, published 18 Jun 2026)
- [CVE-2026-11717: Google MCP Toolbox authentication bypass in validateOpaqueToken](https://junglewise.ai/threats/cve-2026-11717-google-mcp-toolbox-authentication-bypass-in-validateopaquetoken) (critical, CVSS 4, published 18 Jun 2026)
- [CVE-2026-11624: Google MCP Toolbox DNS rebinding via insufficient header validation](https://junglewise.ai/threats/cve-2026-11624-google-mcp-toolbox-dns-rebinding-via-insufficient-header) (critical, CVSS 4, published 13 Jun 2026)
- [CVE-2026-9739: Google MCP Toolbox CORS bypass in SSE handler](https://junglewise.ai/threats/cve-2026-9739-google-mcp-toolbox-cors-bypass-in-sse-handler) (critical, CVSS 4, published 27 May 2026)

## Most severe github.com/googleapis/mcp-toolbox (Go) vulnerabilities

- [CVE-2026-11720: Google MCP Toolbox path traversal in HTTP tool URL builder](https://junglewise.ai/threats/cve-2026-11720-google-mcp-toolbox-path-traversal-in-http-tool-url-builder) (critical, CVSS 9.1, published 29 Jun 2026)
- [CVE-2026-9739: Google MCP Toolbox CORS bypass in SSE handler](https://junglewise.ai/threats/cve-2026-9739-google-mcp-toolbox-cors-bypass-in-sse-handler) (critical, CVSS 4, published 27 May 2026)
- [CVE-2026-11624: Google MCP Toolbox DNS rebinding via insufficient header validation](https://junglewise.ai/threats/cve-2026-11624-google-mcp-toolbox-dns-rebinding-via-insufficient-header) (critical, CVSS 4, published 13 Jun 2026)
- [CVE-2026-11718: Google MCP Toolbox authentication bypass in validateOpaqueToken](https://junglewise.ai/threats/cve-2026-11718-google-mcp-toolbox-authentication-bypass-in-validateopaquetoken) (critical, CVSS 4, published 18 Jun 2026)
- [CVE-2026-11717: Google MCP Toolbox authentication bypass in validateOpaqueToken](https://junglewise.ai/threats/cve-2026-11717-google-mcp-toolbox-authentication-bypass-in-validateopaquetoken) (critical, CVSS 4, published 18 Jun 2026)
- [CVE-2026-11719: Google MCP Toolbox for Databases authorization bypass in protocol handlers](https://junglewise.ai/threats/cve-2026-11719-google-mcp-toolbox-for-databases-authorization-bypass-in-protocol) (high, CVSS 4, published 18 Jun 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

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- [github.com/mattermost/mattermost/server/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8): 207 vulnerabilities
- [github.com/mattermost/mattermost-server/v5 (Go)](https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5): 199 vulnerabilities
- [stdlib (Go)](https://junglewise.ai/threats/technologies/go-stdlib): 178 vulnerabilities
- [github.com/siyuan-note/siyuan/kernel (Go)](https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel): 160 vulnerabilities
- [code.gitea.io/gitea (Go)](https://junglewise.ai/threats/technologies/code-gitea-io-gitea): 126 vulnerabilities
- [code.vikunja.io/api (Go)](https://junglewise.ai/threats/technologies/code-vikunja-io-api): 91 vulnerabilities
- [gogs.io/gogs (Go)](https://junglewise.ai/threats/technologies/gogs-io-gogs): 81 vulnerabilities
- [github.com/traefik/traefik/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2): 78 vulnerabilities
- [github.com/traefik/traefik (Go)](https://junglewise.ai/threats/technologies/github-com-traefik-traefik): 75 vulnerabilities
- [github.com/usememos/memos (Go)](https://junglewise.ai/threats/technologies/github-com-usememos-memos): 75 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "github.com/googleapis/mcp-toolbox (Go) vulnerabilities", https://junglewise.ai/threats/technologies/github-com-googleapis-mcp-toolbox, 13 November 2026.