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NVD description
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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
Reported This MeshCentral vulnerability few months ago and here it is … @ganaseclabs https://www.cve.org/CVERecord?id=CVE-2026-66420 #security #meshcentral #vulnerbaility #0day
Post summary
The tweet simply references a MeshCentral CVE via a link, with no additional details, patches, or exploit information.