CVE-2026-29791
Agentgateway is missing parameter sanitization in MCP to OpenAPI conversion
描述
### Summary When converting MCP `tools/call` request to OpenAPI request, input path, query, and header values are not sanitized. ### Details When using the [MCP to OpenAPI](https://agentgateway.dev/docs/standalone/latest/mcp/connect/openapi/) feature, the proxy lacks proper sanitization of input parameters in the MCP call, allowing: * Injection of additional path or query parameters. * Injection of additional headers. ### Impacted Versions This vulnerability is fixed in Agentgateway v0.12.0+. Users on older versions are recommended to upgrade to v0.12.0+. This feature only impacts usage of the [MCP to OpenAPI](https://agentgateway.dev/docs/standalone/latest/mcp/connect/openapi/) feature ### Credits Agentgateway extends its thanks to @spacewander for the report!
如何修補 CVE-2026-29791
要修補 CVE-2026-29791,請將受影響套件升級到下列已修補版本。
- —升級至 0.12.0 或更新版本
CVE-2026-29791 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 0.12.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |