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Sunday, 13 September 2026
8 agent hacks today▲ 7 vs yesterday (1)
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Incident database

CVE-2026-11719: Scope enforcement bypass in MCP Toolbox for Databases

An authenticated authorization bypass in MCP Toolbox for Databases lets low-privilege clients invoke high-privilege tools by requesting an older MCP protocol version (or omitting the MCP-Protocol-Version header), because only the 2025-11-25 handler enforces per-tool scopesRequired restrictions.

Disclosed 18 June 2026 · Record updated 13 September 2026

Impact

An authenticated client holding only low-privilege tokens (e.g. read) can execute high-privilege tools (e.g. admin) by downgrading the declared MCP protocol version, defeating per-tool scope restrictions.

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-11719