# Google MCP Toolbox vulnerabilities Source: https://junglewise.ai/threats/technologies/mcp-toolbox Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/mcp-toolbox.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 8 vulnerabilities in Google MCP Toolbox: 0 in the last 7 days and 0 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-14541, was published on 31 July 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 8 (3 critical, 0 exploited in the wild) ## About Google MCP Toolbox Toolbox library for working with model context protocol (MCP) servers. ## Latest Google MCP Toolbox vulnerabilities - [CVE-2026-14541: Google mcp-toolbox authentication bypass in Google OAuth provider](https://junglewise.ai/threats/cve-2026-14541-google-mcp-toolbox-authentication-bypass-in-google-oauth-provider) (info, CVSS 8, published 31 Jul 2026) - [CVE-2026-14540: Google mcp-toolbox SSRF in HTTP source component](https://junglewise.ai/threats/cve-2026-14540-google-mcp-toolbox-ssrf-in-http-source-component) (info, CVSS 8, published 31 Jul 2026) - [CVE-2026-14539: Google mcp-toolbox denial of service in HTTP handler](https://junglewise.ai/threats/cve-2026-14539-google-mcp-toolbox-denial-of-service-in-http-handler) (info, CVSS 6.6, published 31 Jul 2026) - [CVE-2026-14538: Google mcp-toolbox auth bypass in bigquery-execute-sql](https://junglewise.ai/threats/cve-2026-14538-google-mcp-toolbox-auth-bypass-in-bigquery-execute-sql) (info, CVSS 5.7, published 31 Jul 2026) - [CVE-2026-14537: Google mcp-toolbox authorization bypass in legacy HTTP API](https://junglewise.ai/threats/cve-2026-14537-google-mcp-toolbox-authorization-bypass-in-legacy-http-api) (info, CVSS 8.1, published 31 Jul 2026) - [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-2026-11718: 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-2026-9739: 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 Google MCP Toolbox 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-2026-11718: 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-2026-14537: Google mcp-toolbox authorization bypass in legacy HTTP API](https://junglewise.ai/threats/cve-2026-14537-google-mcp-toolbox-authorization-bypass-in-legacy-http-api) (info, CVSS 8.1, published 31 Jul 2026) - [CVE-2026-14541: Google mcp-toolbox authentication bypass in Google OAuth provider](https://junglewise.ai/threats/cve-2026-14541-google-mcp-toolbox-authentication-bypass-in-google-oauth-provider) (info, CVSS 8, published 31 Jul 2026) - [CVE-2026-14540: Google mcp-toolbox SSRF in HTTP source component](https://junglewise.ai/threats/cve-2026-14540-google-mcp-toolbox-ssrf-in-http-source-component) (info, CVSS 8, published 31 Jul 2026) - [CVE-2026-14539: Google mcp-toolbox denial of service in HTTP handler](https://junglewise.ai/threats/cve-2026-14539-google-mcp-toolbox-denial-of-service-in-http-handler) (info, CVSS 6.6, published 31 Jul 2026) - [CVE-2026-14538: Google mcp-toolbox auth bypass in bigquery-execute-sql](https://junglewise.ai/threats/cve-2026-14538-google-mcp-toolbox-auth-bypass-in-bigquery-execute-sql) (info, CVSS 5.7, published 31 Jul 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 | ## Other Google technologies - [Google Chrome](https://junglewise.ai/threats/technologies/chrome): 3,930 vulnerabilities - [Google Android](https://junglewise.ai/threats/technologies/android): 628 vulnerabilities - [Google Chrome for iOS](https://junglewise.ai/threats/technologies/chrome-for-ios): 79 vulnerabilities - [Google Pixel](https://junglewise.ai/threats/technologies/google-pixel): 72 vulnerabilities - [Google Cloud Platform](https://junglewise.ai/threats/technologies/google-cloud-platform): 43 vulnerabilities - [Google Chromium V8](https://junglewise.ai/threats/technologies/chromium-v8): 41 vulnerabilities - [Google Chromium](https://junglewise.ai/threats/technologies/chromium): 37 vulnerabilities - [Google TensorFlow](https://junglewise.ai/threats/technologies/tensorflow): 31 vulnerabilities - [Google Pixel Devices](https://junglewise.ai/threats/technologies/pixel-devices): 27 vulnerabilities - [Google Pixel Firmware](https://junglewise.ai/threats/technologies/pixel-firmware): 27 vulnerabilities - [Google Android Framework](https://junglewise.ai/threats/technologies/android-framework): 22 vulnerabilities - [Google Chrome for Android](https://junglewise.ai/threats/technologies/chrome-for-android): 21 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, "Google MCP Toolbox vulnerabilities", https://junglewise.ai/threats/technologies/mcp-toolbox, 12 November 2026.