Technology · Google
Google MCP Toolbox vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Google MCP Toolbox: 0 in the last 7 days and 6 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.
- Last 7 days
- 0
- Last 90 days
- 6
- Critical, all time
- 3
- Exploited in the wild
- 0
Latest Google MCP Toolbox vulnerabilities
- CVE-2026-14541: Google mcp-toolbox authentication bypass in Google OAuth providerinfoCVSS 8
- CVE-2026-14540: Google mcp-toolbox SSRF in HTTP source componentinfoCVSS 8
- CVE-2026-14539: Google mcp-toolbox denial of service in HTTP handlerinfoCVSS 6.6
- CVE-2026-14538: Google mcp-toolbox auth bypass in bigquery-execute-sqlinfoCVSS 5.7
- CVE-2026-14537: Google mcp-toolbox authorization bypass in legacy HTTP APIinfoCVSS 8.1
- CVE-2026-11720: Google MCP Toolbox path traversal in HTTP tool URL buildercriticalCVSS 9.1EPSS 0.5%
- CVE-2026-11718: Google MCP Toolbox authentication bypass in validateOpaqueTokencriticalCVSS 4EPSS 0.2%
- CVE-2026-9739: Google MCP Toolbox CORS bypass in SSE handlercriticalCVSS 4EPSS 0.2%
Most severe Google MCP Toolbox vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-11720: Google MCP Toolbox path traversal in HTTP tool URL buildercriticalCVSS 9.1EPSS 0.5%
- CVE-2026-9739: Google MCP Toolbox CORS bypass in SSE handlercriticalCVSS 4EPSS 0.2%
- CVE-2026-11718: Google MCP Toolbox authentication bypass in validateOpaqueTokencriticalCVSS 4EPSS 0.2%
- CVE-2026-14537: Google mcp-toolbox authorization bypass in legacy HTTP APIinfoCVSS 8.1
- CVE-2026-14541: Google mcp-toolbox authentication bypass in Google OAuth providerinfoCVSS 8
- CVE-2026-14540: Google mcp-toolbox SSRF in HTTP source componentinfoCVSS 8
- CVE-2026-14539: Google mcp-toolbox denial of service in HTTP handlerinfoCVSS 6.6
- CVE-2026-14538: Google mcp-toolbox auth bypass in bigquery-execute-sqlinfoCVSS 5.7
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 1 | 1 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 5 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/mcp-toolbox.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Google MCP Toolbox vulnerabilities", https://junglewise.ai/threats/technologies/mcp-toolbox, 26 September 2026.