CVE-2026-11719
Last modified
CVE-2026-11719 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. An authenticated authorization bypass vulnerability exists in MCP Toolbox for Databases due to missing scope enforcement across older protocol handlers. While the 2025-11-25 protocol version handler correctly enforces per-tool restrictions defined by scopesRequired, older supported protocol versions (2025-06-18, 2025-03-26, and 2024-11-05) omit this check. An authenticated client with low-privilege tokens (e.g., read) can bypass the intended per-tool scope restrictions and execute high-privilege tools (e.g., admin) simply by specifying an older protocol version in the MCP-Protocol-Version header, or by omitting the header entirely (which causes the server to default to the vulnerable 2024-11-05 handler).. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
An authenticated authorization bypass vulnerability exists in MCP Toolbox for Databases due to missing scope enforcement across older protocol handlers. While the 2025-11-25 protocol version handler correctly enforces per-tool restrictions defined by scopesRequired, older supported protocol versions (2025-06-18, 2025-03-26, and 2024-11-05) omit this check. An authenticated client with low-privilege tokens (e.g., read) can bypass the intended per-tool scope restrictions and execute high-privilege tools (e.g., admin) simply by specifying an older protocol version in the MCP-Protocol-Version header, or by omitting the header entirely (which causes the server to default to the vulnerable 2024-11-05 handler).
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| MCP Toolbox for Databases (googleapis/mcp-toolbox) | 1.3.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-11719?
How severe is CVE-2026-11719?
How do I fix CVE-2026-11719?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-11708IBM WebSphere Application Server 9.0, and 8.5 is affected by…9.3
- CVE-2026-1171A flaw has been found in birkir prime up to 0.4.0.beta.0. Im…7.5
- CVE-2026-11712IBM WebSphere Application Server 9.0, and 8.5 is affected by…9.3
- CVE-2026-11714IBM WebSphere Application Server Liberty is affected by a se…9.8
- CVE-2026-11717An authentication bypass vulnerability exists in the generic…9.3
- CVE-2026-11718An authentication bypass vulnerability exists in the generic…9.3
- CVE-2026-1172A vulnerability has been found in birkir prime up to 0.4.0.b…7.5
- CVE-2026-11720A path traversal vulnerability exists in the HTTP tool URL b…9.1
- CVE-2026-11721It is possible for an attacker's zone to respond to a query …7.5
- CVE-2026-1173A vulnerability was found in birkir prime up to 0.4.0.beta.0…9.8
- CVE-2026-11733A buffer overflow vulnerability in the listed NETGEAR models…1.1
- CVE-2026-11734A buffer overflow vulnerability in the listed NETGEAR models…1.1
Are you affected by CVE-2026-11719?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST