CVE-2026-124726 · AI agents & MCP
NO FIX YET · SEE WHAT TO DO
Apache APISIX's MCP endpoint lets a caller reach API endpoints that the OpenAPI document never declared, using the HTTP method of a declared tool. The requests carry the credentials that the Route adds, so the caller gets access those credentials permit.
first public Nov 13, 2026 · 1 source
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Teams running Apache APISIX from 3.19.0 before 3.20.0 that expose an MCP endpoint built from an OpenAPI document, where Routes attach upstream credentials. Deployments without the MCP feature or on other versions are outside the stated range.
Not affected if no-mcp-endpoint, version-outside-3.19.0-to-3.20.0
Who cares apache-apisix, api-gateway, mcp
apisix version or the image tag; affected versions are from 3.19.0 before 3.20.0.3.20.0.Relative Path Traversal, with Unintended Proxy vulnerability in Apache APISIX.
A caller of the MCP endpoint can invoke endpoints the OpenAPI document never declared, under the declared tool's HTTP method, using the credentials the Route adds. This issue affects Apache APISIX: from 3.19.0 before 3.20.0.
Users are recommended to upgrade to version 3.20.0, which fixes the issue.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/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
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