CVE-2026-110279

IBM ContextForge MCP Gateway authentication bypass in upstream credential handling

high · 8.1

Fix listed

IBM ContextForge MCP Gateway

Published Nov 13, 2026, 21:43 UTC

Description

IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 is vulnerable to improper credential handling because the X-Upstream-Authorization request header can override the gateway-managed upstream credential for OAuth (authorization_code and client_credentials), bearer and basic authenticated gateways, which could allow an authenticated user to cause upstream requests to be made with a different credential and bypass per-user permission and audit attribution.

Reported fixed versions

v1.1.1

Official CVE record Read Eden case study View source and advisories

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