CVE-2026-90898

Katalog CVE

CVSS 9.8 · Critical EPSS 0,62%

Kerentanan Improper Access Control. Skor CVSS 3.1 9.8 (Critical) menurut jfrog.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

14 September 2026

Terakhir diubah

18 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

9.8 (Critical), sumber jfrog.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-284: Improper Access Control
CWE-306: Missing Authentication for Critical Function

EPSS (30 hari)

0,62% peluang dieksploitasi; lebih tinggi dari 48,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/maximhq/bifrost
• https://github.com/maximhq/bifrost/commit/12e170352bd25eab1ae9ba16611f1797d1fd8fdc
• https://github.com/maximhq/bifrost/pull/6757
• https://github.com/maximhq/bifrost/releases/tag/transports/v2.1.0