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High · 8.8 CVE-2026-109492 EUVD-2026-121582GHSA-xgj3-w2cc-qgrq

Microsoft MCP Gateway Elevation of Privilege Vulnerability

Published Nov 10, 2026 · Updated Nov 13, 2026 · Assigned by microsoft

Description

Authorization bypass through user-controlled key in Microsoft MCP Gateway allows an authorized attacker to elevate privileges over a network.

Affected products

VendorProductAffectedFixed
Microsoft mcp-gateway 1.0.0.0 – < 1.0.0 1.0.0

References