CVE-2026-29791 MEDIUM

CVE-2026-29791: Agentgateway: Missing parameter sanitization in MCP to OpenAPI conversion

Vendor Agentgateway
Product agentgateway
Weakness CWE-20 · Input validation
Published March 6, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

4.9/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

Agentgateway is an open source data plane for agentic AI connectivity within or across any agent framework or environment. Prior to version 0.12.0, when converting MCP tools/call request to OpenAPI request, input path, query, and header values are not sanitized. This issue has been patched in version 0.12.0.

Key dates

02Disclosure timeline

March 6, 2026 CVE published
March 9, 2026 Record updated