CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:NCVE-2026-124726 Apache APISIX: openapi-to-mcp tool call can reach an API path the document does not declare
Medium (6.9) in apache software foundation apache apisix.
On this page
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.
Severity
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-23 Relative Path Traversal
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- Assigned by
- apache (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- apache software foundation:apache apisix
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Apache Software Foundation Apache APISIX | from 3.19.0 before 3.20.0 |
Attack patterns (CAPEC)
- CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
- CAPEC-139 Relative Path Traversal Likelihood: High · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.