CVE-2026-105294: Legcord

High severity, CVSS 7.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Legcord 1.1.0 through 1.3.0 contains a configuration injection vulnerability that allows script in the Discord page to write any config key via the window.legcord settings.setConfig bridge. Attackers exploiting a Discord XSS can set additionalArguments to persistently add --proxy-server and --ignore-certificate-errors switches, routing all client traffic through an interception proxy.

Affected products

• Legcord Legcord: from 1.1.0, up to and including 1.3.0

Published 2026-10-05. Last modified 2026-10-06.