CVE-2026-29791

Agentgateway: Missing parameter sanitization in MCP to OpenAPI conversion

Published: Mar 6, 2026Updated: Mar 18, 2026 Sources: CVE List NVD GHSACWE-20

4.9MEDIUM

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-20 NVD-CWE-noinfo

Affected Products

agentgateway

oss-project

agentgateway

lfprojects

oss-projectaka mlflow, mcp servers, valkey, model context protocol servers

agentgateway

AI / ML / ai-agent-tooling

package-ecosystem

github.com/agentgateway/agentgateway

OSS Libraries

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://github.com/agentgateway/agentgateway/security/advisories/GHSA-v2x6-wwfw-r2rq

github.com

https://nvd.nist.gov/vuln/detail/CVE-2026-29791

nvd.nist.gov

https://github.com/agentgateway/agentgateway/commit/9a5287569d892e77a8be8c3bb7bf3d7744244274

github.com

and 1 more references View all →

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