CVE-2026-59950: lfprojects mcp python sdk

csirt@kutim:~/threat-intel/cve/CVE-2026-59950

CVSS 8.1 · High EPSS 0,23%

Kerentanan Origin Validation Error pada lfprojects mcp python sdk. Skor CVSS 3.1 8.1 (High) menurut NVD.

Deskripsi (NVD)

The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to 1.28.1, the deprecated mcp.server.websocket.websocket_server transport accepted WebSocket handshakes without applying Host or Origin header validation, leaving no SDK-level way to restrict which origins could connect to applications that exposed that transport. This issue is fixed in version 1.28.1.

Rincian

Terbit di NVD: 15 Juli 2026
Terakhir diubah: 17 Juli 2026
Status NVD: Analyzed
CVSS 3.1: 8.1 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-346: Origin Validation Error
CWE-1385: Missing Origin Validation in WebSockets
EPSS (30 hari): 0,23% peluang dieksploitasi; lebih tinggi dari 12,8% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
lfprojects	mcp python sdk	Semua versi sebelum 1.28.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-vj7q-gjh5-988w advisory vendor
https://github.com/modelcontextprotocol/python-sdk/commit/777b8d06710c140e3606b0d4598e2aa48546c266 patch
https://github.com/modelcontextprotocol/python-sdk/pull/2992 issue tracking · patch
https://github.com/modelcontextprotocol/python-sdk/releases/tag/v1.28.1 release notes

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.