CVE-2026-90898
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.
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.
타임라인
- NVD 공개
- 첫 보도 The Hacker News · 비프로스트(Bifrost) AI 게이트웨이의 심각한 결함으로 인해 공…
- 최근 보도 (총 2건) The Hacker News · ⚡ 주간 요약: 3억 8,700만 달러 규모의 암호화폐 해킹, 시트릭…
날짜 정보 없는 신호: 공개 PoC 1건
벡터: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
공개 익스플로잇 / PoC
- GitHub 공개 PoC 1건 — 대표 레포 ↗
🎭 이 CVE, 다음 위협조직 관련 보도와 함께 언급됨: Kimsuky Scattered Spider