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CVE-2026-90898

Опубликовано: 14 сент. 2026
Источник: nvd
CVSS3: 9.8
EPSS Низкий

Описание

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required.

The default is governance.auth_config.is_enabled=false. Auth off means every caller is a local admin. One unauthenticated POST /api/mcp/client is enough to run a program as the Bifrost process user (appuser on the official image).

 transports/v2.1.0 refuses an unauthenticated stdio registration with 403. transports/v2.0.0 still allows it.

EPSS

Процентиль: 28%
0.00343
Низкий

9.8 Critical

CVSS3

Дефекты

CWE-284

Связанные уязвимости

CVSS3: 9.8
github
6 дней назад

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.auth_config.is_enabled=false. Auth off means every caller is a local admin. One unauthenticated POST /api/mcp/client is enough to run a program as the Bifrost process user (appuser on the official image).  transports/v2.1.0 refuses an unauthenticated stdio registration with 403. transports/v2.0.0 still allows it.

EPSS

Процентиль: 28%
0.00343
Низкий

9.8 Critical

CVSS3

Дефекты

CWE-284