CVE-2026-66420

Katalog CVE

CVSS 8.8 · High EPSS 0,22%

Kerentanan Origin Validation Error. Skor CVSS 3.1 8.8 (High) menurut vulncheck.com.

Deskripsi (NVD)

MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticated administrator sessions by exploiting an unconditional early return in the CheckWebServerOriginName() function within webserver.js when self-signed certificates are in use. Attackers can open cross-origin WebSocket connections to any of the twelve WebSocket endpoints, send crafted action commands to exfiltrate the server sessionKey used to sign session cookies, forge session tokens as arbitrary users, and gain full remote control of all managed devices governed by the MeshCentral instance.

Rincian

Terbit di NVD

30 Juli 2026

Terakhir diubah

9 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

8.8 (High), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-346: Origin Validation Error

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,7% 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/Ylianst/MeshCentral
• https://github.com/Ylianst/MeshCentral/commit/f04c9f4
• https://github.com/Ylianst/MeshCentral/pull/7882
• https://www.vulncheck.com/advisories/meshcentral-cross-site-websocket-hijacking-via-origin-validation-bypass-o...