PT-2026-66622 · Tugcantopaloglu · Openclaw-Dashboard

Ashish Kunwar · CVE-2026-66420 · Publicado 2026-07-30 · Atualizado 2026-07-30

NVD

CVSS v3.1

8.8

Alta

Vetor base

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Correção

Origin Validation Error

Enumeração de Fraquezas

CWE-346

Identificadores relacionados

CVE-2026-66420

Produtos afetados

Openclaw-Dashboard

Referências · 5

• https://github.com/Ylianst/MeshCentral · Nota
• https://github.com/Ylianst/MeshCentral/pull/7882 · Nota
• https://github.com/Ylianst/MeshCentral/commit/f04c9f4 · Correção
• https://vulncheck.com/advisories/meshcentral-cross-site-websocket-hijacking-via-origin-validation-bypass-on-self-signed-certificate-deployments · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-66420 · Nota de Segurança