CVE-2026-33252: lfprojects mcp go sdk

csirt@kutim:~/threat-intel/cve/CVE-2026-33252

CVSS 6.5 · Medium EPSS 0,21%

Kerentanan Cross-Site Request Forgery (CSRF) pada lfprojects mcp go sdk. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.1, the Go SDK's Streamable HTTP transport accepted browser-generated cross-site `POST` requests without validating the `Origin` header and without requiring `Content-Type: application/json`. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution. Version 1.4.1 contains a patch for the issue.

Rincian

Terbit di NVD: 24 Maret 2026
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-352: Cross-Site Request Forgery (CSRF)
EPSS (30 hari): 0,21% peluang dieksploitasi; lebih tinggi dari 10,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
lfprojects	mcp go sdk	Semua versi sebelum 1.4.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/modelcontextprotocol/go-sdk/security/advisories/GHSA-89xv-2j6f-qhc8 patch · advisory vendor
https://github.com/modelcontextprotocol/go-sdk/commit/a433a831d6e5d5ac3b9e625a8095aa8eaa040dfc patch

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.